How to sum all the values in a dictionary

Question

Let s say I have a dictionary in which the keys map to integers like   d     key1   1  key2   14  key3   47    Is there a syntactically minimalistic way to return the sum of the values in d   i e  62 in this case

User · Answer

I feel sum d values    is the most efficient way to get the sum   You can also try the reduce function to calculate the sum along with a lambda expression   reduce lambda x y x y d values

User · Answer

d     key1   1  key2   14  key3   47  sum1   sum d item  for item in d  print sum1    you can do it using the for loop

User · Answer

sum d values    -  d  -  Your dictionary Variable

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You could consider  for loop  for this     d     data   100   data2   200   data3   500    total   0   for i in d values            total    i   total   800

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You can get a generator of all the values in the dictionary  then cast it to a list and use the sum   function to get the sum of all the values   Example   c   a  123  b  4  d  4  c  -1001  x  2002  y  1001   sum list c values

User · Answer

As you d expect   sum d values

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phihag s answer  and similar ones  won t work in python3   For python 3   d     key1   1  key2   14  key3   47  sum list d values         Update   There are complains that it doesn t work  I just attach a screenshot from my terminal  Could be some mismatch in versions etc

User · Answer

USE sum   TO SUM THE VALUES IN A DICTIONARY  Call dict values   to return the values of a dictionary dict  Use sum values  to return the sum of the values from the previous step  d     key1  1  key2  14  key3  47  values   d values    Return values of a dictionary     total   sum values  print total

User · Answer

Sure there is  Here is a way to sum the values of a dictionary    gt  gt  gt  d     key1  1  key2  14  key3  47   gt  gt  gt  sum d values    62

User · Answer

In Python 2 you can avoid making a temporary copy of all the values by using the itervalues   dictionary method  which returns an iterator of the dictionary s keys   sum d itervalues      In Python 3 you can just use d values   because that method was changed to do that  and itervalues   was removed since it was no longer needed    To make it easier to write version independent code which always iterates over the values of the dictionary s keys  a utility function can be helpful   import sys  def itervalues d       return iter getattr d    itervalues    values   sys version info 0  gt 2       sum itervalues d     This is essentially what Benjamin Peterson s six module does

[python] How to sum all the values in a dictionary?

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