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chdir context manager

/ Published in: Python
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This context manager restores the value of the current working directory (cwd) after the enclosed code block completes or raises an exception. If a directory name is supplied to the context manager then the cwd is changed prior to running the code block.

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  1. from __future__ import with_statement # only for python 2.5
  2. import contextlib
  3. import os
  4.  
  5. @contextlib.contextmanager
  6. def chdir(dirname=None):
  7.     curdir = os.getcwd()
  8.     try:
  9.         if dirname is not None:
  10.         os.chdir(dirname)
  11.         yield
  12.     finally:
  13.         os.chdir(curdir)

URL: http://www.astropython.org/snippet/2009/10/chdir-context-manager

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