What is the difference between dict.items() and dict.iteritems()?
From Python docs
That's what they said. I turned the chords around They return references to the same object Is there anything I forgot?
d={1:'one',2:'two',3:'three'}
print 'd.items():'
for k,v in d.items():
if d[k] is v: print '\tthey are the same object'
else: print '\tthey are different'
print 'd.iteritems():'
for k,v in d.iteritems():
if d[k] is v: print '\tthey are the same object'
else: print '\tthey are different'
Output:
d.items():
they are the same object
they are the same object
they are the same object
d.iteritems():
they are the same object
they are the same object
they are the same object
The original Python items() returned a list with a tuple as an element.
This method required a lot of memory, so for efficient memory management after the generator was introduced,
Instead of items(), you will write iteritems() which is the iterator-generator method.
However, 2.x supported both items() and iteritems() for compatibility with the previous version
In python3, iterm() returns the etherator, not the list (items() of python3 = iterems() of python2)
The iteritems() method cannot be written.
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