Find space in string python

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Sometimes, we might have a problem in which we need to check if the string has any of blank spaces. This kind of problem can be in Machine Learning domain to get specific type of data set. Let’s discuss certain ways in which this kind of problem can be solved. Method #1 : Using regex This kind of problem can be solved using the regex utility offered by python. By feeding the appropriate regex string in search(), we can check presence of space in a string. 

Python3

import re

test_str = "Geeks  forGeeks"

print("The original string is : " + test_str)

res = bool(re.search(r"\s", test_str))

print("Does string contain spaces ? " + str(res))

Output : 

The original string is : Geeks  forGeeks
Does string contain spaces ? True

Method #2 : Using in operator This task can also be performed using in operator. Just required to check for a space in the string. The verdict returned is true even if a single space is found and false otherwise. 

Python3

test_str = "Geeks  forGeeks"

print("The original string is : " + test_str)

res = " " in test_str

print("Does string contain spaces ? " + str(res))

Output : 

The original string is : Geeks  forGeeks
Does string contain spaces ? True

Method #3: Using find() method.

find() method searches the given string for argument passed and returns the position or else returns -1.

Python3

test_str = "Geeks forGeeks"

print("The original string is : " + test_str)

res=False

if(test_str.find(" ")!=-1):

    res=True

print("Does string contain spaces ? " + str(res))

Output

The original string is : Geeks forGeeks
Does string contain spaces ? True

Method #4: Using isspace() method
 

Python3

test_str = "Geeks forGeeks"

print("The original string is : " + test_str)

c=0

res=False

for i in test_str:

    if(i.isspace()):

        c+=1

if(c>=1):

    res=True

print("Does string contain spaces ? " + str(res))

Output

The original string is : Geeks forGeeks
Does string contain spaces ? True

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Python String isspace() method returns “True” if all characters in the string are whitespace characters, Otherwise, It returns “False”. This function is used to check if the argument contains all whitespace characters, such as:

• ‘ ‘ – Space
• ‘\t’ – Horizontal tab
• ‘\n’ – Newline
• ‘\v’ – Vertical tab
• ‘\f’ – Feed
• ‘\r’ – Carriage return

Python String isspace() Method Syntax

Syntax: string.isspace()

Returns:

1. True – If all characters in the string are whitespace characters.
2. False – If the string contains 1 or more non-whitespace characters.

Python String isspace() Method Example

Python3

string = "\n\t\n"

print(string.isspace())

Output:

True

Example 1:  Basic Intuition of isspace() in Program

Here we will check whitespace in the string using isspace() program.

Python3

string = 'Geeksforgeeks'

print(string.isspace())

string = '\n \n \n'

print(string.isspace())

string = 'Geeks\nfor\ngeeks'

print( string.isspace())

Output: 

False
True
False

Example 2: Practical Application

Given a string in Python, count the number of whitespace characters in the string. 

Input : string = 'My name is Ayush'
Output : 3

Input : string = 'My name is \n\n\n\n\nAyush'
Output : 8

Algorithm: 

1. Traverse the given string character by character up to its length, check if the character is a whitespace character. 
2. If it is a whitespace character, increment the counter by 1, else traverse to the next character. 
3. Print the value of the counter.

Python3

string = 'My name is Ayush'

count=0

for a in string:

    if (a.isspace()) == True:

        count+=1

print(count)

string = 'My name is \n\n\n\n\nAyush'

count = 0

for a in string:

    if (a.isspace()) == True:

        count+=1

print(count)

Output: 

3
8