如何在 Python 的字典键中查找多个关键字

Question

I want to search a dictionary that has a title as the key, and a http link as the value assigned to that key. I wanna function that searches through the dictionary, searching for a key that contains all the keywords that i put into the function, and if it does not find any keys with the keywords, it returns nothing. Here is the dict:

I've tried if and in statements but nothing so far.

dict = {
   'adidas originals yung-1 - core black / white':
        'https://kith.com/products/adidas-originals-yung-1-core-black-white',
   'adidas originals yung-1 - grey one / white': 
        'https://kith.com/products/adidas-originals-yung-1-grey-one-white',
   'hoka one tor ultra high 2 wp boot - black': 
        'https://kith.com/products/hoka-one-tor-ultra-high-2-wp-black'}

Let's say I wanna search for black and ultra, the function would return the third item in the dictionary cause hoka one tor ultra high 2 wp boot - black' contains the keywords black and ultra. If it doesn't contain all the keywords I put in, it would return nothing in the dictionary.

Answer 1

You can iterate over the keys of a dictionary just like this:

for item in dic:
    if searchterm in item:
        print('do something')

Answer 2

Using list comprehension you can do something like this:

def getUrl(keyword):
    return [dict[key] for key in dict.keys() if keyword in key]

if I call this with `keyword = 'black' it returns:

['https://kith.com/products/hoka-one-tor-ultra-high-2-wp-black', 'https://kith.com/products/adidas-originals-yung-1-core-black-white']

This should return the list of urls corresponding to keys containing keyword .

If you have more than one keyword this should do the trick:

def getUrl(keywords):
    return [dict[key] for key in dict.keys() if len([keyword for keyword in keywords if keyword in key])>0]

if I call this with keywords = ['black','ultra'] it returns this:

['https://kith.com/products/hoka-one-tor-ultra-high-2-wp-black', 'https://kith.com/products/adidas-originals-yung-1-core-black-white']

They both return [] in case of no keys found.

Answer 3

If you want to make a function that takes a list of keywords and checks that each keyword is represented in a value, you could do something like.

keywords = ['black', 'ultra'] 

def dict_search(list_of_keywords):
    for key in dict.keys():
        if all(x in key for x in list_of_keywords):
            return(key)

In [1]: dict_search(keywords)
hoka one tor ultra high 2 wp boot - black