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if any Python

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Python has a built-in any() function for exactly “if any” purpose.

if any(t < 0 for t in x):
    # do something

Also, if you’re going to use “True in …”, make it a generator expression so it doesn’t take O(n) memory:

if True in (t < 0 for t in x):

if any Python example

Simple example code check if one of the following items is in a list.

a = [1, 2, 3, 4]
b = [2, 7]

if any(x in a for x in b):
print("a have any value of b:", True)


if any Python

1 line without list comprehensions.

>>> any(map(lambda each: each in [2,3,4], [1,2]))
>>> any(map(lambda each: each in [2,3,4], [1,5]))
>>> any(map(lambda each: each in [2,3,4], [2,4]))

Using any() and all() to check if a list contains one set of values or another

all and any are functions that take some iterable and return True, if

  • in the case of all, no values in the iterable are falsy;
  • in the case of any, at least one value is truth.
if any(x==playerOne for x in board) or any(x==playerTwo for x in board):

# or 
if playerOne in board or playerTwo in board:
if all(x == playerOne or x == playerTwo for x in board):

Comment if you have any doubts or suggestions on this Python if statement topic.

Note: IDE: PyCharm 2021.3.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.

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