231 – Built-ins any and all

231 – Built-ins any and all#

The built-in any can be used to check if any of the values in a given iterable are True (or Truthy). The spelled-out loop

one_truthy = False
for v in values:
    if v:
        one_truthy = True
        break

is equivalent to a single call to the built-in any:

one_truthy = any(values)

Similarly, you can write a loop that checks if all values of the given iterable are True or Truthy:

all_truthy = True
for v in values:
    if not v:
        all_truthy = False
        break

This is equivalent to the call

all_truthy = all(values)

The keyword break is used to mimic the short-circuiting behaviour that both built-ins have, which means the argument iterable is only consumed up to where it’s necessary.

Further reading: