Defaultdict key exists

'in' is the intended way to test for the existence of a key in a dict.

d = {"key1": 10, "key2": 23}

if "key1" in d:
    print("this will execute")

if "nonexistent key" in d:
    print("this will not")

Source: stackoverflow.com

Similar codes

15 votes167 views2 answers
How to get user ip in python
Python
5 votes164 views2 answers
Python copy instance
Python
0 vote163 views2 answers
Python3 conditional with boolean
Python
0 vote170 views1 answer
Get pixel color pygame
Python
0 vote176 views2 answers
Numpy random in python
Python
0 vote178 views1 answer
Read image and resize
Python
0 vote169 views1 answer
Pandas read_csv multiple separator
Python
0 vote153 views1 answer
What is comma in regex
Python
0 vote173 views1 answer
Overriding update in serializer django
Python
8 votes167 views2 answers
How do I set Conda to activate the base environment by default?
Python