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Python all() Function

❮ Built-in Functions

Example

Check if all items in a list are True:

mylist = [True, True, True]
x = all(mylist)
Run example »

Definition and Usage

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.

Syntax

all(iterable)

Parameter Values

Parameter Description
iterable An iterable object (list, tuple, dictionary)

More Examples

Example

Check if all items in a list are True:

mylist = [0, 1, 1]
x = all(mylist)
Run example »

Example

Check if all items in a tuple are True:

mytuple = (0, True, False)
x = all(mytuple)
Run example »

Example

Check if all items in a set are True:

myset = {0, 1, 0}
x = all(myset)
Run example »

Example

Check if all items in a dictionary are True:

mydict = {0 : "Apple", 1 : "Orange"}
x = all(mydict)
Run example »

Note: When used on a dictionary, the all() function checks if all the keys are true, not the values.

Related Pages

The any() Function

❮ Built-in Functions