Key in dictionary
Python, Dictionary · Oct 16, 2020

Checks if the given key exists in a dictionary.
- Use the
in
operator to check ifd
containskey
.
def key_in_dict(d, key):
return (key in d)
d = {'one': 1, 'three': 3, 'five': 5, 'two': 2, 'four': 4}
key_in_dict(d, 'three') # True