On 5/25/14 10:09 PM, Dave Angel wrote:
Ned Batchelder <n...@nedbatchelder.com> Wrote in message:
On 5/25/14 8:55 AM, Igor Korot wrote:
Hi, ALL,
I have a following data structure:
my_dict[(var1,var2,var3)] = None
my_dict[(var4,var5,var6)] = 'abc'
What I'm trying to do is this:
for (key,value) in my_dict:
#Do some stuff
but I'm getting an error "Too many values to unpack".
What am I doing wrong?
Thank you.
You want:
for key, value in my_dict.items(): # or .iteritems()
Iterating over a dictionary gives you its keys. items() will give you
key,value pairs.
Or, if the dict is large, you might want
for key in my_dict:
value = my_dict [key]
...
For a large dict, .iteritems (Python 2) or .items (Python 3) are
perfectly fine and don't have a cost to avoid. .items (Python 2)
produces a list, which would be bad.
--
Ned Batchelder, http://nedbatchelder.com
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