Open multiple files using “open ” and “with open” in Python

This post introduces two ways to open multiple files in Python.

• “with open” # do not need to bother to close the file(s) if use “with open”

with open("datafile.csv" , "r") as f:
  f.read()
with open("datafile2.csv" , "r") as f2:
  f2.read()

Or

try:
  with open('file.csv', 'w') as f, open('file2.csv', 'w') as f2:
    do_something()
except IOError as e:
  print 'Operation failed: %s' % e.strerror

• “open”  # need to close the file when use open.

f = open("datafile.csv" , "r")
f2 = open("datafile2.csv" , "r")
f.read()
f2.read()
f.close()
f2.close()

 

References:

• Open up multiple files in a folder in python for read/write
• How can I open multiple files using “with open” in Python?