Delete all instances of an element in a python dictionary values?

Question

I'm trying to delete all occurrences of elements of C in the dictionary v1.

e.g. in the example below, C = ['L'] and I'm trying to remove L from all the dictionary values (which are lists). I've been working on the code below:

v1 = {'D': ['J', 'K', 'L'], 'B': ['K', 'J', 'L'], 'C': ['L', 'J', 'K'], 'E': ['K', 'L', 'J'], 'A': ['J', 'L', 'K']}
        c = ['L']
        for q,v in v1.items():
            for i in v1.items():
                if c[i] == v[0]:
                    del v[0]

However this has been giving me all sorts of errors: index errors because I'm deleting v[0] and it's iterating over and I'm not sure how to fix this?

score 1 · Answer 1 · answered Apr 15 '15 at 01:02

v1 = {'D': ['J', 'K', 'L'], 'B': ['K', 'J', 'L'], 'C': ['L', 'J', 'K'], 'E': ['K', 'L', 'J'], 'A': ['J', 'L', 'K']}
c = ['L']
for q,v in v1.items():
    for i in c:
        v.remove(i)

print v1

Result:

{'A': ['J', 'K'], 'C': ['J', 'K'], 'B': ['K', 'J'], 'E': ['K', 'J'], 'D': ['J', 'K']}

Delete all instances of an element in a python dictionary values?

1 Answers1