Error dict object has no attribute iteritems

Question

I m trying to use NetworkX to read a Shapefile and use the function write shp   to generate the Shapefiles that will contain the nodes and edges  but when I try to run the code it gives me the following error   Traceback  most recent call last     File  C  Users Felipe PycharmProjects untitled asdf py   line 4  in  lt module gt      nx write shp redVial   shapefiles     File  C  Python34 lib site-packages networkx readwrite nx shp py   line 192  in write shp     for key  data in e 2  iteritems    AttributeError   dict  object has no attribute  iteritems    I m using Python 3 4 and installed NetworkX via pip install   Before this error it had already given me another one that said  xrange does not exist  or something like that  so I looked it up and just changed xrange to range in the nx shp py file  which seemed to solve it   From what I ve read it could be related to the Python version  Python2 vs Python3

User · Answer

The purpose of  iteritems   was to use less memory space by yielding one result at a time while looping  I am not sure why Python 3 version does not support iteritems  though it s been proved to be efficient than  items    If you want to include a code that supports both the PY version 2 and 3    try      iteritems except NameError      iteritems   items   This can help if you deploy your project in some other system and you aren t sure about the PY version

User · Answer

As you are in python3   use dict items   instead of dict iteritems    iteritems   was removed in python3  so you can t use this method anymore   Take a look at Python 3 0 Wiki Built-in Changes section  where it is stated      Removed dict iteritems    dict iterkeys    and dict itervalues         Instead  use dict items    dict keys    and dict values     respectively

User · Answer

In Python2  dictionary iteritems   is more efficient than dictionary items   so in Python3  the functionality of dictionary iteritems   has been migrated to dictionary items   and iteritems   is removed  So you are getting this error    Use dict items   in Python3 which is same as dict iteritems   of Python2

User · Answer

I had a similar problem  using 3 5  and lost 1 2 a day to it but here is a something that works - I am retired and just learning Python so I can help my grandson  12  with it   mydict2   Atlanta  78  Macon  85  Savannah  72  maxval  max mydict2 values     print maxval  mykey  key for key value in mydict2 items  if value  maxval  0  print mykey  YEILDS   85 Macon

User · Answer

As answered by RafaelC  Python 3 renamed dict iteritems -  dict items  Try a different package version  This will list available packages   python -m pip install yourOwnPackageHere     Then rerun with the version you will try after    to install switch version

User · Answer

In Python2  we had  items   and  iteritems   in dictionaries  dict items   returned list of tuples in dictionary   k1 v1   k2 v2        It copied all tuples in dictionary and created new list  If dictionary is very big  there is very big memory impact    So they created dict iteritems   in later versions of Python2  This returned iterator object  Whole dictionary was not copied so there is lesser memory consumption  People using Python2 are taught to use dict iteritems   instead of  items   for efficiency as explained in following code   import timeit  d    i i 2 for i in xrange 10000000     start   timeit default timer   for key value in d items        tmp   key   value  do something like print t1   timeit default timer   - start  start   timeit default timer   for key value in d iteritems        tmp   key   value t2   timeit default timer   - start   Output   Time with d items    9 04773592949 Time with d iteritems    2 17707300186   In Python3  they wanted to make it more efficient  so moved dictionary iteritems   to dict items    and removed  iteritems   as it was no longer needed   You have used dict iteritems   in Python3 so it has failed  Try using dict items   which has the same functionality as dict iteritems   of Python2  This is a tiny bit migration issue from Python2 to Python3

[python] Error: " 'dict' object has no attribute 'iteritems' "

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