What happens when you use all () in python?
In this tutorial, we will learn about the Python all() function with the help of examples. Show
The Example
all() SyntaxThe syntax of the all(iterable) all() ParametersThe
all() Return Value
Example 1: How all() works for lists?
Output True False False False True The Example 2: How all() works for strings?
Output True True True Example 3: How all() works with Python dictionaries?In the case of dictionaries, if all keys (not values) are true or the dictionary is empty, all() returns True. Else, it returns false for all other cases..
Output False True False True True ❮ Built-in Functions ExampleCheck if all items in a list are True: mylist = [True, True, True] Try it Yourself » Definition and UsageThe If the iterable object is empty, the SyntaxParameter Values
More ExamplesExampleCheck if all items in a list are True: mylist = [0, 1, 1] Try it Yourself » ExampleCheck if all items in a tuple are True: mytuple = (0, True, False) Try it Yourself » ExampleCheck if all items in a set are True: myset = {0, 1, 0} Try it Yourself » ExampleCheck if all items in a dictionary are True: mydict = {0 : "Apple", 1 :
"Orange"} Try it Yourself » Note: When used on a dictionary, the all() function checks if all the keys are true, not the values. Related PagesThe any() Function ❮ Built-in Functions When coding in Python, have you ever had to check if any item or all items in an iterable evaluate to In this tutorial, we'll learn about Python's Before we jump into As shown in the snippet above, That said, it's fairly intuitive that all non-zero values, and non-empty iterables have a truth
value of Let's understand the syntax of the 👉 Syntax: Therefore, the Here are a few simple examples to verify how the Let's now use the List comprehensions can be very helpful in collecting all these truth values in a list. Here's a quick recap: As shown in the code snippet below, our example string Therefore,
calling Notice how For each character in the string, there's a corresponding truth value – Let's take another similar example. This time, let's check for the occurrence of letters in a string. The string under test is
The
How to Use Python's any() Function to Combine Multiple Conditions with Logical ORLet's say you decide to be more productive and write down the list shown below. However, you choose not to be hard on yourself and decide that you can have lots of sweets so long as one of the items in the list happens!😀 Notice how we have multiple conditions to consider, but choose to have sweets even if one of them evaluates to Isn't this very similar to an Suppose you have
You can now collect all these conditions in an iterable, say, a list or a tuple, and then call
How to Use the all() Function in PythonLet's start with the syntax of the 👉 Syntax:
The How to Use Python's all() Function to Check for Letters in a StringLet's take similar examples to check for certain characteristics of strings. The test string
Notice how the list How to Use Python's all() Function to Check for Digits in a StringLet's now check if all characters in the string are digits by using the
How to Use Python's all() Function to Combine Multiple Conditions with Logical ANDLet's consider the following example. This time, you're in contention for an iPad and the conditions are more stringent. You've got to complete all tasks in the list to get an iPad from your cousin.😀 Now, this is very similar to using an
You could use the
ConclusionI hope this tutorial helped you understand the See you all soon in another post. Until then, happy learning! Learn to code for free. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as developers. Get started What happens when we use all () in Python?Python all() Function
The all() function returns True if all items in an iterable are true, otherwise it returns False. If the iterable object is empty, the all() function also returns True.
What is any () and all () in Python?Introduction to any() and all()
The any(iterable) and all(iterable) are built-in functions in Python and have been around since Python 2.5 was released. Both functions are equivalent to writing a series of or and and operators respectively between each of the elements of the passed iterable .
How do you use a ANY () or a all () in Python?Use all() when you need to check a long series of and conditions. Use any() when you need to check a long series of or conditions.
Is all () a function?The all() function returns True if all elements in the given iterable are true. If not, it returns False .
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