Python Dict List to Sum of ints -

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so have series of lists i'd sum on , return each individual value of. lists this:

'testrel.txt': [1, 1, 1, 1, 1]

this recent traceback:

traceback (most recent call last): file "./seriescount.py", line 24, in <module> w.writerow(sum(series)) typeerror: unsupported operand type(s) +: 'int' , 'str'

i know why won't sum values (they're not integers , therefore can't summed), i'm having trouble syntax of casting list of key values ints. here's script:

#!/usr/bin/env python  import csv import copy import os import sys import glob  #get current working dir, set count, , select file delimiter os.chdir('/mypath')  #parses through files , saves dict series = {} fn in glob.glob('*.txt'):     open(fn) f:         series[fn] = [1 line in f if line.strip() , not line.startswith('#')]  print series  #save dictionary key/val pairs csv open('seriescount.csv', 'wb') f:     w = csv.dictwriter(f, series)      w.writeheader()     w.writerow(sum(series))

result should this:

'testrel.txt': 5

few issues in code -

  1. when sum(series) , trying sum keys, not values. also, dictwriter's writerow expects dictionary input, not single value (which sum() return, if work @ all, wont anyway).

  2. you should not openning file (for writing csv in binary mode - wb) , open in write mode - w.

instead of doing - sum(series) - should try dictionary comprehension create sums of each key/value pair.

code -

with open('seriescount.csv', 'w') f:     w = csv.dictwriter(f, series)     w.writeheader()     w.writerow({k:sum(v) k,v in series.items()})

demo -

>>> series = { ... 'mytext1.txt':[1,1,1,1,1,1], ... 'mytext2.txt':[1,1,1,1,1], ... 'mytext3.txt':[1,1,1,1,1,1,1,1,1,1,1,1]} >>> open('seriescount.csv', 'w') f: ...     w = csv.dictwriter(f, series) ...     w.writeheader() ...     w.writerow({k:sum(v) k,v in series.items()}) ... 8

the result in seriescount.csv -

mytext3.txt,mytext2.txt,mytext1.txt 12,5,6

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