Question

I’ve been trying to remove a specific item from multiple values in a dictionary in python and am not completely sure how to do this. For example, in the dictionary:

d  = {('hello', 'hi', 'how are you'): 2, ('hi', 'hello', 'how are you'): 1}

How would I remove ‘hi’ so that all that remains is:

d  = {('hello', 'how are you'): 2, ('hello', 'how are you'): 1}

Answer 1

You apparently want to change the key. So you simply need to store the corresponding value with the new key and remove the old one. However, in your case creating a new dict is easier since you want to modify every single item.

d2 = {}
for key, value in d.iteritems():
    key = list(key)
    if 'hi' in key:
        key.remove('hi')
    d2[tuple(key)] = value

d2 now contains {('hello', 'how are you'): 1}

As you can see it contains only one value unlike in your example because dicts cannot contain the same key twice.