CODEWITHSUNDEEP
pythondictionary
Deepika Devendran
Deepika Devendran

Reputation: 11

python dictionary checking with key

I want to check whether my key is equal to the input: 

topics = c.classify("what about ")
a = topics.keys() 
if a == "resources": 
    print("yes")

But a is stored as dict_keys(['resource"]) I want a to be just "resources". can anyone help me on this,please?

Upvotes: 0

Views: 73

Answers (2)

Rob Bricheno
Rob Bricheno

Reputation: 4653

You can use in. When you use this with a dictionary, it checks if the value you've specified is a key in the dictionary.

topics = c.classify("what about ")
if "resources" in topics:
    print("yes")

This is the fastest and most standard way to do this. Read here for more Python dictionary keys. "In" complexity

Upvotes: 0

Mr Alihoseiny
Mr Alihoseiny

Reputation: 1229

You should first convert the keys into regular python list and then iterate in it (You probably can do it without converting, but I think it is more simple to find).

topics = c.classify("what about ")
a = list(topics.keys())
for key in a:
    if key == "resources": 
        print("yes")

Don't forget a dict can have multiple values. As @rob-bricheno said, you can do it simpler with in operator. This operator will loop through the list and if the element you've specified is in it, return True, otherwise it will return False value. So you can do it with this simplified code:

topics = c.classify("what about ")
a = list(topics.keys())
if "resources" in a:
    print("yes")

When resources is in the a list, if condition is True, so the print will call. When it is not in the a, print will skip.

Upvotes: 1

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