newbie: copying dictionaries
Jon J. Morin
rotundo52 at hotmail.com
Wed Jun 12 00:36:28 EDT 2002
Hi. I'm a newbie to python and have a question about copying dictionary
objects. I'm working out of Learning Python by Mark Lutz & David Ascher
(O'Reilly). The following bit of code was an exercise in the book and it
works, but what I'm asking is why? I see where the dictionary keys get
copied from one object to the other, but how do the values get copied over
as well?
#!/usr/bin/python
# copyDict.py - copy a dictionary argument and return it
def copyDict(aDict):
newDict = {}
for key in aDict.keys():
newDict[key] = aDict[key]
return newDict
D = {'jon':1, 'allison':2, 'zachary':3}
print copyDict(D)
Output:
[jmorin at cisx1 python]$ ./copyDict.py
{'zachary': 3, 'jon': 1, 'allison': 2}
Any help with this is appreciated. Thanks.
Jon J. Morin
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