Yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/popen3-objects.html

[[yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/module-popen2.html|]]

[[yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/module-time.html|]]

Python Library Reference

[[yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/contents.html|]]

[[yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/modindex.html|]]

[[yurttas/PL/SL/python/docs/core-python-programming/doc/20/lib/genindex.html|]]

Previous: 6.8 popen2 Up: 6.8 popen2 Next: 6.9 time

6.8.1 Popen3 and Popen4 Objects

Instances of the Popen3 and Popen4 classes have the following methods:

poll (): Returns -1 if child process hasn't completed yet, or its return code otherwise.

The following attributes are also available:

fromchild: A file object that provides output from the child process. For Popen4 instances, this will provide both the standard output and standard error streams.

childerr: Where the standard error from the child process goes is capturestderr was true for the constructor, or None. This will always be None for Popen4 instances.