Python Dictionary - not in function

key not in dict

Method Overview:

The operator not in checks whether a given key is not present in a Python dictionary. If the key is not present returns TRUE else returns FALSE.
The not in operator behaves the opposite of the in operator.

Example:

# Example Python progran that checks whether
# a given key is present in a dictionary

environmentDictionary = {'path': '/bin:/opt/bin'}

if 'path' not in environmentDictionary:
     print('Path is not set')
else:
     print('Path is set')

Output:

Path is set

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