30-seconds-of-code/snippets/python/s/is-empty.md

title, type, language, tags, author, cover, dateModified

title	type	language	tags	author	cover	dateModified
Collection is empty	snippet	python	list dictionary string	chalarangelo	salad-1	2023-01-12T05:00:00-04:00

Checks if the a value is an empty sequence or collection.

• Use not to test the truth value of the provided sequence or collection.

def is_empty(val):
  return not val

is_empty([]) # True
is_empty({}) # True
is_empty('') # True
is_empty(set()) # True
is_empty(range(0)) # True
is_empty([1, 2]) # False
is_empty({ 'a': 1, 'b': 2 }) # False
is_empty('text') # False
is_empty(set([1, 2])) # False
is_empty(range(2)) # False