all()

Iterable

Returns True if all elements in the iterable are truthy (or if the iterable is empty).

Signature

all(iterable)

Returns

bool

Example

print(all([True, True, True]))   # True
print(all([True, False, True]))  # False
print(all([]))                    # True

About all()

all is a Python iterable function with the signature all(iterable). Returns True if all elements in the iterable are truthy (or if the iterable is empty). It returns a value of type bool.

Python provides a rich set of built-in functions and standard library modules that cover common programming tasks. Understanding these functions helps you write more idiomatic, efficient Python code. The allfunction is commonly used in data processing, web development, scripting, and automation tasks.

When working with all(), consider edge cases like empty inputs, None values, and type mismatches. Python's duck typing means many built-in functions work with any object that implements the required protocol (e.g., __len__ for len(), __iter__ for iteration). This flexibility is a key strength of Python's design philosophy.

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