"""
Problem Statement:-

How to check value exists in the dictionary or not using membership operator?
"""

squares = {1: 1, 3: 9, 5: 25, 7: 49, 9: 81}
# membership tests for key only not value

# write_key_name without quote
print(5 in squares) # write here key name which is exist in dictionary


print('10' not in squares) # write here key name which is not exist in dictionary


print('10' in squares) # write here key name which is not exist in dictionary