Answers for "how to check if key is not in dictionary python"

if key in dictionary python

dict = {"key1": 1, "key2": 2}
if "key1" in dict:
 	print dict["key1]
>> 1

python dict if key does not exist

d = {}
r = d.get('missing_key', None)

check dictionary has key python

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

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

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