Question

Possible Duplicate:
Creating a dictionary from a CSV file

I am having an issue when trying to print a dictionary to a CSV file. The dictionary currently has 4 columns but all 4 columns are printed in 1 single column. It may be the for loop that I am using to write to the CSV file is to blame but I am not quite sure. I am trying to have the dictionary print in each column.

Sample Data:

     Date        First Name     Last Name     Score
12/28/2012 15:15        John          Smith        20
12/29/2012 15:15        Alex          Jones        38
12/30/2012 15:15      Michael       Carpenter      25

Below are some code excerpts:

import csv

csvWriter = csv.writer(open("C:\\Users\\Chris\\Desktop\\test_out.csv", 'w'), delimiter=' ', quotechar=' ', quoting=csv.QUOTE_MINIMAL)

For loop to read in CSV file above:

for row in reader:

for k, v in row.items():

    if not k in mydict:
        mydict[k] = [v]
    else:
        mydict[k].append(v)

For loop to print Dictionary keys to CSV file.

for item in mydict.keys():
    csvWriter.writerow(item)

Current output (column headings):

D a t e

F i r s t    N a m e

L a s t      N a m e

S c o r e

Wanted output (column headings):

Date      First Name       Last Name       Score

Any help would be greatly appreciated.

Answer 1

Now that I understand your structure better, try this:

#first write column headers
csvWriter.writerow(list(mydict.keys())

#now data, assuming each column has the same # of values
for i in xrange(len(mydict['Date'])):
    csvWriter.writerow([mydict[k][i] for k in mydict.keys()])