Remove certain keys from a dictionary in python
- by Margaret
I'm trying to construct a dictionary that contains a series of sets:
{Field1:{Value1, Value2, Value3}, Field2{Value4}}
The trouble is, I then wish to delete any fields from the dictionary that only have one value in the set. I have been writing code like this:
for field in FieldSet:
if len(FieldSet[field]) == 1:
del(FieldSet[field])
But receive the error "RuntimeError: dictionary changed size during execution". (Not surprising, since that's what I'm doing.) It's not the be-all and end-all if I have to knock together some sort of workaround, but is it possible to do this?
