I have a dictionary variable with several thousands of items. For the purpose of writing code and debugging, I want to temporarily reduce its size to more easily work with it (ie check contents by printing). I don't really care which items get removed for this purpose. I tried to keep only 10 first keys with this code:
i = 0
for x in dict1:
if i >= 10:
dict1.pop(x)
i += 1
but I get the error:
RuntimeError: dictionary changed size during iteration
What is the best way to do it?
You could just rewrite the dictionary selecting a slice from its items.
dict(list(dict1.items())[:10])
Select some random keys to delete first, then iterate over that list and remove them.
import random
keys = random.sample(list(dict1.keys()), k=10)
for k in keys:
dict1.pop(k)
You can convert the dictionary into a list of items, split, and convert back to a dictionary like this:
splitPosition = 10
subDict = dict(list(dict1.items())[:splitPosition])
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