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key in dict

#!/usr/bin/python3

thisdict = {'Name': 'tutorialpro', 'Age': 7}

# Check if the key 'Age' exists
if 'Age' in thisdict:
    print("Key 'Age' exists")
else:
    print("Key 'Age' does not exist")

# Check if the key 'Sex' exists
if 'Sex' in thisdict:
    print("Key 'Sex' exists")
else:
    print("Key 'Sex' does not exist")

# not in

# Check if the key 'Age' does not exist
if 'Age' not in thisdict:
    print("Key 'Age' does not exist")
else:
    print("Key 'Age' exists")

Key 'Age' exists
Key 'Sex' does not exist
Key 'Age' exists