How to write a tuple of tuples to a CSV file using Python

问题

I have a tuple of tuples

import csv
A = (('Max', 3 ,' M'),('bob',5,'M'),('jane',6,'F'))
result = open("newfile.csv",'wb')
writer = csv.writer(result, dialect = 'excel')
writer.writerow(A)
result.close

This writes a CSV file with rows with A[0], A[1] and A[2] . What i want is a row with name, age and gender , which has the corresponding values .

回答1:

Write all rows at once:

writer.writerows(A)

instead of

writer.writerow(A)

File newfile.csv looks now like this:

Max,3, M
bob,5,M
jane,6,F

Also, add () to your last line, it is a function call: result.close().

If you are on Python 2.6 or newer, you can use this form:

import csv
A = (('Max', 3, 'M'),('bob', 5, 'M'),('jane', 6, 'F'))
with open('newfile.csv', 'wb') as result:
    writer = csv.writer(result, dialect='excel')
    writer.writerows(A)

回答2:

Not sure if I understand you fully but I think this will help :

    print >>f, "\n".join([",".join(x) for x in A]);

来源：https://stackoverflow.com/questions/8687568/how-to-write-a-tuple-of-tuples-to-a-csv-file-using-python