Instances of the Popen class have the following methods:
| ) |
| ) |
| input=None) |
None, if no data should be sent to the child.
communicate() returns a tuple (stdout, stderr).
Note: The data read is buffered in memory, so do not use this method if the data size is large or unlimited.
The following attributes are also available:
PIPE, this attribute is a file
object that provides input to the child process. Otherwise, it is
None.
PIPE, this attribute is a file
object that provides output from the child process. Otherwise, it is
None.
PIPE, this attribute is file
object that provides error output from the child process. Otherwise,
it is None.
None value indicates that the process
hasn't terminated yet. A negative value -N indicates that the child
was terminated by signal N (Unix only).
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