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+--- Thread: Deleting value from dictionary. (/thread-10370.html)
Deleting value from dictionary. - dbdb12 - May-18-2018
I was wondering how to remove values from a key if the length of the value was less than a certain amount. I'm not trying to remove the entire key/item. All keys and values are strings in this case.
RE: Deleting value from dictionary. - Larz60+ - May-18-2018
Do you mean like this?
>>> thedict = {
... 'aaaa': {
... '123': 'One Two Three',
... '234': 'Two Three Four'
... },
... 'bbbb': {
... '123': 'One Two Three',
... '456': 'Four five six',
... }
... }
>>> thedict
{'aaaa': {'123': 'One Two Three', '234': 'Two Three Four'}, 'bbbb': {'123': 'One Two Three', '456': 'Four five six'}}
>>> del thedict['bbbb']['123']
>>> thedict
{'aaaa': {'123': 'One Two Three', '234': 'Two Three Four'}, 'bbbb': {'456': 'Four five six'}}
>>>
RE: Deleting value from dictionary. - dbdb12 - May-18-2018
Yes, but is it possible to not hard-code it? For example, if your'e given a dictionary, and you need to remove values from keys where the length of the word is lets say less than 5.
So like:
dictionary = {"hello":["hey", "dinosaur", "dragon"], "fire:["volcano", "explosion", "boom"]}
So i need to remove "hey" and "boom".
I apologize if i'm difficult to understand. I'm new to python and still not quite familiar with the terminology.
RE: Deleting value from dictionary. - buran - May-18-2018
(May-18-2018, 01:38 AM)dbdb12 Wrote: All keys and values are strings in this case.
(May-18-2018, 02:00 AM)dbdb12 Wrote: So like:well, note that your statement and your example contradict to each other. In your example the key is a string, the value is a list. And that list has number of elements that are strings.
dictionary = {"hello":["hey", "dinosaur", "dragon"], "fire:["volcano", "explosion", "boom"]}
anyway, something like this should work:
dictionary = {"hello":["hey", "dinosaur", "dragon"], "fire":["volcano", "explosion", "boom"]}
new_dict = dict()
for key, value in dictionary.items():
new_dict[key] = [s for s in value if len(s)>5]
print(new_dict)