CODEWITHSUNDEEP
pythondictionarycomparison
Louis
Louis

Reputation: 321

Python compare keys values from same dictionary not working

I am learning python and I don’t get why this simple piece of code does not work.

list = {"Text":"Text"}

print(list)

if list.keys() == list.values():
    print("True")
else:
    print("False")

This returns False when it should return True.

Upvotes: 0

Views: 349

Answers (2)

CodeMonkey
CodeMonkey

Reputation: 23738

The type of dict.keys() and dict.values() is different so must cast both to a list object to compare.

data = {"Text":"Text"}

a = data.keys() 
b = data.values()

print(a)
print(b)
print(a == b) # False

if list(a) == list(b):
    print("True")
else:
    print("False")

Output: 

dict_keys(['Text'])
dict_values(['Text'])
False
True

Upvotes: 1

Barmar
Barmar

Reputation: 780909

keys() and values() don't return lists, they return iterator objects that yield the keys and values. If you want to compare the contents, convert them to lists, using the list() function.

You won't be able to do this in your snippet because you've redefined the name list to your dictionary. You should use a variable name that isn't the same as a built-in function.

my_dict = {"Text":"Text"}

print(my_dict)

if list(my_dict.keys()) == list(my_dict.values()):
    print("True")
else:
    print("False")

Upvotes: 1

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