This is a general reply to all.
Thanks for all the suggestions. I hadn't really thought about filtering
empty dictionaries because the data I'm processing won't have them, but
it does make for a much nicer, more general filter. I did end up using
bearophileH's code, but that's mostly because he go
> Would it not be easier to modify the pretty-printer to ignore such
> entries rather than have to make a duplicate (I presume you have reason
> to need the original dictionary unchanged) dictionary and then delete
> entries that match your "ignore" criteria?
Good question. The data I'm hand
Fuzzyman:
> Can you delete values from a dictionary whilst iterating over its items ?
Try the code, it works. I am not iterating on the dict, I am not using
dict.iteritems(), that produces a lazy iterable, I am using
dict.items() that produces a list of (key,value) pairs. And I am not
removing ele
>
> Assuming dict_sweep worked perfectly it would take input like this:
>
> A_in = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
>
> B_in = {1: {1: {1: None, 2: {1: None}}, 2: 2, 3: None}
>
> and output this:
>
> A_out = {1: {2: 2, 3: {2: 2}}, 2: 2}
>
> B_out = {2:2}
>
> This dict_sweep ab
[EMAIL PROTECTED] wrote:
> Better:
>
> def clean(d):
> for key,val in d.items():
> if isinstance(val, dict):
> val = clean(val)
> if val is None or val == {}:
> del d[key]
> return d
Can you delete values from a dictionary whilst iterating over its
Brian L. Troutwine wrote:
> I've got a problem that I can't seem to get my head around and hoped
> somebody might help me out a bit:
>
> I've got a dictionary, A, that is arbitarily large and may contains
> ints, None and more dictionaries which themselves may contain ints,
> None and more dictio
Better:
def clean(d):
for key,val in d.items():
if isinstance(val, dict):
val = clean(val)
if val is None or val == {}:
del d[key]
return d
a = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
print clean(a) # Out: {1: {2: 2, 3: {2: 2}}, 2: 2}
b = {1:
My first try, not much tested:
def clean(d):
for key,val in d.items():
if isinstance(val, dict):
val = clean(val)
if not val:
del d[key]
return d
a = {1: {2: 2, 3: {1: None, 2: 2}}, 2: 2, 3: None}
print clean(a) # Out: {1: {2: 2, 3: {2: 2}}, 2: 2}
b
