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Full Discussion: [Python] - subprocess issue
Top Forums Programming [Python] - subprocess issue Post 303038959 by jim mcnamara on Wednesday 18th of September 2019 10:23:23 AM
Old 09-18-2019
My understanding is the operation of the two are different:

Documentation -
Quote:
check_call() returns as soon as /bin/sh process exits, it does not wait for child processes to complete

check_output() waits until all output is read. When (and if) check_output inherits the stdin pipe then check_output() will wait until it exits, i.e., until the child process the inherited pipe. In other words it waits for the child process to end.
Try getting get rid of the shlex,
Code:
subprocess.check_output( [ "command" "parameter_1" ])

 

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WAIT(1) 						    BSD General Commands Manual 						   WAIT(1)

NAME
wait -- await process completion SYNOPSIS
wait [pid] DESCRIPTION
If invoked with no arguments, the wait utility waits until all existing child processes in the background have terminated. Available operands: pid If a pid operand is specified, and it is the process ID of a background child process that still exists, the wait utility waits until that process has completed and consumes its status information, without consuming the status information of any other process. If a pid operand is specified that is not the process ID of a child background process that still exists, wait exits without waiting for any processes to complete. The wait utility exits with one of the following values: 0 The wait utility was invoked with no operands and all of the existing background child processes have terminated, or the process specified by the pid operand exited normally with 0 as its exit status. >0 The specified process did not exist and its exit status information was not available, or the specified process existed or its exit status information was available, and it terminated with a non-zero exit status. If the specified process terminated abnormally due to the receipt of a signal, the exit status information of wait contains that termination status as well. STANDARDS
The wait command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD
June 5, 1993 BSD
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