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Python | Check if the dictionary contains unique keys and values

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Method # 1: Using Loops
In Naive’s method for this particular task, we can check each value and insert each value into a list / hash in the dictionary, and when repetition occurs, simply stop the flow and return false.

# Python3 demo code
# check for unique values ​​
# Using loops

 
# initializing dictionary

test_dict = { ’ Manjeet’ : 1 , ’Akash’ : 2 , ’Akshat’ : 3 , ’Nikhil’ : 1 }

 
# print the original dictionary

print ( "The original dictionary:" + str (test_dict))

 
# using loops
# check for unique values ​​

flag = False

hash_val = dict ()

for keys in test_dict:

  if test_dict [keys] in hash_val:

flag = True

  break

else :

hash_val [test_dict [keys]] = 1

 
# print result

print ( "Does dictionary contain repetition:" + str (flag))

Output:

 The original dictionary: {’Nikhil’: 1,’ Akash’: 2, ’Akshat’: 3,’ Manjeet’: 1} Does dictionary contain repetition: True 

Method # 2: Using len () + set () + values ​​()
This problem can be easily solved by a combination of the above three functions. The set function can be used to convert values ​​to a set, remove duplicates, and the values ​​function can be used to access values.

# Python3 demo code
# checking for unique values ​​
# Using len () + set () + values ​​()

 
# initializing dictionary

test_dict = { ’Manjeet’ : 1 , ’Akash’ : 2 , ’Akshat’ : 3 , ’Nikhil’ : 1 }

 
# printing the original dictionary

print ( "The original dictionary:" + str (test_dict))

  
# using len () + set () + values ​​()
# check for unique values ​​

flag = len (test_dict)! = len ( set (test_dict.values ​​()))

 
# print result

print ( "Does dictionary contain repetition:" + str (flag))

Output:

 The original dictionary: {’Nikhil’: 1, ’Akash’: 2,’ Akshat’: 3, ’Manjeet’: 1} Does dictionary contain repetition: True 

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