Remove multiple values from [list] dictionary python

Question

I am trying to remove all values 'x' from a large dictionary and NOT delete any keys, but when I run the code there are still 'x' values remaining.

Here is an excerpt of my dictionary:

myDict = {0: ['id1', 'id2', 'id3'], 1: ['id1', 'id2', 'x', 'x'], 2: ['id1', 'x', 'x', 'x']} 

My code thus far:

for k, v in myDict.iteritems():
if v == 'x':
    myDict.remove('x')
print myDict

What I am aiming for:

myDict = {0: ['id1', 'id2', 'id3'], 1: ['id1', 'id2'], 2: ['id1']}

How should I remove the 'x' values in the lists, please?

Answer 1

You could use a list comprehension within a dictionary comprehension as follows:

myDict = {k:[el for el in v if el != 'x'] for k, v in myDict.items()}
print(myDict)

Output

{0: ['id1', 'id2', 'id3'], 1: ['id1', 'id2'], 2: ['id1']}