how to write add frequency in particular file by reading a csv file and then making a new file of multiple csv file by adding frequency

[breamoreboy at gmail.com]

On Thursday, June 22, 2017 at 12:16:28 PM UTC+1, kishan.samp... at gmail.com wrote:
> I want to write a common file in which It can add the frequency by adding multiple csv file and if the same words are repeated in python then it should add the frequency in the common file can any one help me please
> 
> 
> import re
> import operator
> import string
> 
> class words:
>     def __init__(self,fh):
>         self.fh = fh
>     def read(self):
>         for line in fh:
>             yield line.split()
> 
> if __name__ == "__main__":
>     frequency = {}
>     document_text = open('data_analysis.csv', 'r')
>     common1_file = open("common_file1.csv", "r")
>     
>     text_string = document_text.read().lower()
>     match_pattern = re.findall(r'\b[a-z]{3,15}\b', text_string)
>     
>     text_string_one = common1_file.read().lower()
>     match_pattern_one = re.findall(r'\b[a-z]{3,15}\b', text_string_one)
>     #print("match_pattern"+(str(match_pattern)))
>     for word in match_pattern:
>         for word1 in match_pattern_one:
>             count = frequency.get(word,0)
>             count1 = frequency.get(word1,0)
>             if word1 == word:
>                 frequency[word] = count + count1
>             else:
>                 frequency[word] = count 
>     
> 
>     frequency_list = frequency.keys()
>     text_file = open("common_file1.csv", "w")
>     for words in frequency_list:
>         data = (words, frequency[words])
>         print (data)
>         #text_file = open("common_file1.csv", "w")
>         #for i in data:
>         #store_fre = (str(data)+"\n")
>         text_file.write(str(data)+"\n")
>     
> 
>     text_file.close()
> 
> 
> this is my code written by me til now but not getting satisfied results

A quick glance suggests you need to close common_file1.csv in before you open it in WRITE mode.

You can simplify your code by using a Counter https://docs.python.org/3/library/collections.html#collections.Counter

Kindest regards.

Mark Lawrence