Python all()

Check if all items in a list are True:

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)

Example

Check if all items in a list are True:

mylist = [0, 1, 1]
x = all(mylist)

False

Example

Check if all items in a tuple are True:

mytuple = (0, True, False)
x = all(mytuple)

False

Example

Check if all items in a set are True:

myset = {0, 1, 0}
x = all(myset)

False

Example

Check if all items in a dictionary are True:

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

False

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