Python Os.closerange() Method

Description

Python method closerange() closes all file descriptors from fd_low (inclusive) to fd_high (exclusive), ignoring errors.This method is introduced in Python version 2.6.

Syntax

Following is the syntax for closerange() method:

os.closerange(fd_low, fd_high);

Parameters

• fd_low − This is the Lowest file descriptor to be closed.
• fd_high − This is the Highest file descriptor to be closed.

This function is equivalent to:

for fd in xrange(fd_low, fd_high):
   try:
      os.close(fd)
   except OSError:
      pass

Return Value

This method does not return any value.

Example

The following example shows the usage of closerange() method.

#!/usr/bin/python

import os, sys

# Open a file
fd = os.open( "foo.txt", os.O_RDWR'os.O_CREAT )

# Write one string
os.write(fd, "This is test")

# Close a single opened file
os.closerange( fd, fd)

print "Closed all the files successfully!!"

This would create a given file foo.txt and then write the given content in that file. This will produce the following result:

Closed all the files successfully!!

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