csv writer not closing file

Question

im reading a csv file and then writing a new one:

import csv

with open(\'thefile.csv\', \'rb\') as f:
  data = list(csv.reader(f))

import collections
count         


        

Answer 1

You can break out the open command into its own variable, so that you can close it later.

f = open('/pythonwork/thefile_subset1.csv', 'w')
writer = csv.writer(f)
f.close()

csv.writer throws a ValueError if you try to write to a closed file.