Hướng dẫn how to add each element in a list python - cách thêm từng phần tử trong python danh sách

Question

Nhiều câu trả lời ở trên là rất tốt. Tôi cũng đã thấy một số câu trả lời kỳ lạ sẽ thực hiện công việc. Ngoài ra, câu trả lời cuối cùng được nhìn thấy là thông qua một vòng lặp bình thường. Sự sẵn sàng đưa ra câu trả lời này dẫn tôi đến itertools và numpy, điều này sẽ làm cùng một công việc theo một cách khác.

Nội dung chính Show

Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách trong Python?
Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách?
Làm thế nào để bạn thêm hai yếu tố vào một danh sách trong Python?
Bạn có thể tổng hợp một danh sách trong Python không?

Ở đây tôi trình bày những cách khác nhau để thực hiện công việc, không được trả lời ở trên.

import operator
import itertools

x = [3, 5, 6, 7]

integer = 89

"""
Want more vairaint can also use zip_longest from itertools instead just zip
"""
#lazy eval
a = itertools.starmap(operator.add, zip(x, [89] * len(x))) # this is not subscriptable but iterable
print(a)
for i in a:
  print(i, end = ",")


# prepared list
a = list(itertools.starmap(operator.add, zip(x, [89] * len(x)))) # this returns list
print(a)



# With numpy (before this, install numpy if not present with `pip install numpy`)
import numpy

res = numpy.ones(len(x), dtype=int) * integer + x # it returns numpy array
res = numpy.array(x) + integer # you can also use this, infact there are many ways to play around
print(res)
print(res.shape) # prints structure of array, i.e. shape

# if you specifically want a list, then use tolist

res_list = res.tolist()
print(res_list)

Đầu ra

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

Lý do duy nhất của tôi để làm nổi bật việc sử dụng numpy là người ta nên luôn luôn thực hiện các thao tác như vậy với các thư viện như Numpy vì nó hiệu quả hiệu suất cho các mảng rất lớn.sole reason to highlight the use of numpy is that one should always do such manipulations with libraries like numpy because it is performance efficient for very large arrays.

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Example:

Bàn luận

Đưa ra một danh sách các số, hãy viết một chương trình Python để tìm tổng của tất cả các yếu tố trong danh sách.

Python3

Input: [12, 15, 3, 10]
Output: 40

Input: [17, 5, 3, 5]
Output: 30

Ví dụ #1: & nbsp;

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

4

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

7

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

9

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

Input: [12, 15, 3, 10]
Output: 40

1__

Sum of all elements in given list:  74

2

Input: [17, 5, 3, 5]
Output: 30

1

Sum of all elements in given list:  74

4

Sum of all elements in given list:  74

5

Is

Sum of all elements in given list:  74

Input: [17, 5, 3, 5]
Output: 30

6
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
Sum of all elements in given list: 74
0
Sum of all elements in given list: 74
1 Using while() loop

Python3

Input: [12, 15, 3, 10]
Output: 40

Input: [17, 5, 3, 5]
Output: 30

Ví dụ #1: & nbsp;

Sum of all elements in given list:  74

5

Sum of all elements in given list:  74

6

Input: [17, 5, 3, 5]
Output: 30

4

Input: [17, 5, 3, 5]
Output: 30

5

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

4

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

7

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

9

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

Input: [12, 15, 3, 10]
Output: 40

1__

Is

Sum of all elements in given list:  74

2

Input: [17, 5, 3, 5]
Output: 30

1

Sum of all elements in given list:  74

4

Sum of all elements in given list:  74

5

Input: [17, 5, 3, 5]
Output: 30

6
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
Sum of all elements in given list: 74
0
Sum of all elements in given list: 74
1

Sum of all elements in given list:  74

Đầu ra Recursive way

Python3

Ví dụ #1: & nbsp;

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

4

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

7

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

9

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

8

Input: [12, 15, 3, 10]
Output: 40

1__

Is

Input: [17, 5, 3, 5]
Output: 30

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

12

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

13

Input: [17, 5, 3, 5]
Output: 30

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

Sum of all elements in given list:  74

0

Sum of all elements in given list:  74

1

Đầu ra

Sum of all elements in given list:  74

2

Input: [17, 5, 3, 5]
Output: 30

1

Sum of all elements in given list:  74

4

Sum of all elements in given list:  74

5

Is

Sum of all elements in given list:  74

Input: [17, 5, 3, 5]
Output: 30

6
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
1
Sum of all elements in given list: 74
0
Sum of all elements in given list: 74
1 Using sum() method

Python3

Ví dụ #1: & nbsp;

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

Sum of all elements in given list:  74

2

Input: [17, 5, 3, 5]
Output: 30

1

Sum of all elements in given list:  74

4

Sum of all elements in given list:  74

5

Output:

Sum of all elements in given list:  74

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

4
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
6
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
7
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
8
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
9
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
8
Input: [12, 15, 3, 10] Output: 40
1__Using add() function of operator module

Is

Python3

Input: [17, 5, 3, 5]
Output: 30

6

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

1

Sum of all elements in given list:  74

0

Sum of all elements in given list:  74

1

Đầu ra

Ví dụ #2: Sử dụng while () loop & nbsp; & nbsp;

Input: [12, 15, 3, 10]
Output: 40

8

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

Input: [17, 5, 3, 5]
Output: 30

6

Input: [12, 15, 3, 10]
Output: 40

8

Sum of all elements in given list:  74

0

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

Sum of all elements in given list:  74

9

Sum of all elements in given list:  74

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

89

Đầu ra: & nbsp; & nbsp; Using enumerate function

Python3

Ví dụ #3: Cách đệ quy & nbsp; & nbsp;

numpy7 numpy8numpy9

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

00

Input: [12, 15, 3, 10]
Output: 40

08

Input: [12, 15, 3, 10]
Output: 40

09

Sum of all elements in given list:  74

0

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

Input: [12, 15, 3, 10]
Output: 40

12

Sum of all elements in given list:  74

2

Input: [12, 15, 3, 10]
Output: 40

14

Input: [17, 5, 3, 5]
Output: 30

6
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
02
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
03
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
3
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
07 Using list comprehension

Python3

Đầu ra

Ví dụ #2: Sử dụng while () loop & nbsp; & nbsp;

Sum of all elements in given list:  74

2

Input: [17, 5, 3, 5]
Output: 30

1

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

52

Input: [12, 15, 3, 10]
Output: 40

36

Input: [12, 15, 3, 10]
Output: 40

8
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
3 Using lambda function

Python3

Đầu ra

Ví dụ #2: Sử dụng while () loop & nbsp; & nbsp;

Input: [12, 15, 3, 10]
Output: 40

8
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
2
>>> # output by lazy val >>> 92,94,95,96, # output of iterating above starmap object >>> [92, 94, 95, 96] # output obtained by casting to list >>> __ >>> # |\ | | | |\/| |__| \ / >>> # | \| |__| | | | | >>> [92 94 95 96] # this is numpy.ndarray object >>> (4,) # shape of array >>> [92, 94, 95, 96] # this is a list object (doesn't have a shape)
3

Python3

Input: [17, 5, 3, 5]
Output: 30

6

Input: [12, 15, 3, 10]
Output: 40

8

Sum of all elements in given list:  74

0

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

Sum of all elements in given list:  74

9

Đầu ra: & nbsp; & nbsp;

Input: [12, 15, 3, 10]
Output: 40

8

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

Input: [12, 15, 3, 10]
Output: 40

08

Input: [12, 15, 3, 10]
Output: 40

09

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

2

Input: [12, 15, 3, 10]
Output: 40

09

Sum of all elements in given list:  74

0

Input: [12, 15, 3, 10]
Output: 40

82

>>>  # output by lazy val
>>> 92,94,95,96,                                     # output of iterating above starmap object
>>> [92, 94, 95, 96]                                 # output obtained by casting to list
>>>                   __
>>> # |\ | |  | |\/| |__| \ /
>>> # | \| |__| |  | |     |
>>> [92 94 95 96]                                    # this is numpy.ndarray object
>>> (4,)                                             # shape of array
>>> [92, 94, 95, 96]                                 # this is a list object (doesn't have a shape)

3

Input: [12, 15, 3, 10]
Output: 40

84

Sum of all elements in given list:  74

2

Input: [12, 15, 3, 10]
Output: 40

14

Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách trong Python?

Python cung cấp một tổng số hàm sẵn () tổng hợp các số trong danh sách. Cú pháp: Sum (có thể lặp lại, bắt đầu) có thể sử dụng được: Có thể là bất cứ thứ gì danh sách, bộ dữ liệu hoặc từ điển, nhưng quan trọng nhất là nó phải là số. Bắt đầu: Bắt đầu này được thêm vào tổng số số trong itable.sum(iterable, start) iterable : iterable can be anything list , tuples or dictionaries , but most importantly it should be numbers. start : this start is added to the sum of numbers in the iterable.

Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách?

Xem mã bên dưới:..

def sum_of_list (l): tổng số = 0. cho val trong l: tổng = tổng + val.trả lại tổng số.My_list = [1,3,5,2,4] ....

def sum_of_list (l, n): nếu n == 0: return l [n];trả về l [n] + sum_of_list (l, n-1) my_list = [1,3,5,2,4] ....

my_list = [1,3,5,2,4] in "tổng của my_list là", sum (my_list) chạy ..

Làm thế nào để bạn thêm hai yếu tố vào một danh sách trong Python?

Phương thức số 3: Sử dụng bản đồ () + add () map () cũng có thể được sử dụng, vì chúng ta có thể nhập thao tác Thêm vào bản đồ () cùng với hai danh sách và bản đồ () có thể thực hiện việc bổ sung cả hai kỹ thuật.Using map() + add() map() can also be used, as we can input the add operation to the map() along with the two list and map() can perform the addition of both the techniques.

Bạn có thể tổng hợp một danh sách trong Python không?

Tổng chức năng tích hợp của Python () là một cách hiệu quả và pythonic để tổng hợp một danh sách các giá trị số..

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Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách trong Python?

Làm thế nào để bạn tổng hợp tất cả các yếu tố trong một danh sách?

Làm thế nào để bạn thêm hai yếu tố vào một danh sách trong Python?

Bạn có thể tổng hợp một danh sách trong Python không?

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