Python: Check if a given function returns True for at least one element in the list

Last update on December 21 2024 13:10:53 (UTC/GMT +8 hours)

Check Any True for Function

Write a Python program to check if a given function returns True for at least one element in the list.

Use any() in combination with map() to check if fn returns True for any element in the list.

Sample Solution:

Python Code:

# Define a function 'some' that takes a list 'lst' and an optional function 'fn'.
# It uses the 'any' function and 'map' to check if any element in the list satisfies the given condition specified by 'fn'.
def some(lst, fn=lambda x: x):
    return any(map(fn, lst))
	
# Call the 'some' function with different lists and conditions, and print the results.
print(some([0, 1, 2, 0], lambda x: x >= 2))
print(some([5, 10, 20, 10], lambda x: x < 2)) 

Sample Output:

True
False

Flowchart:

Python Code Editor:

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