schrodinger.utils.subprocess module¶
A wrapper to the standard library subprocess module.
This module automatically checks for executables in the $SCHRODINGER and $SCHRODINGER/utilities to make it absolute, and adds an interpreter to the command where appropriate.
A general limitation of this module is that the subprocess commands must be specified as lists of strings. This is a conscious design decision meant to avoid issues with quoting arguments that contain spaces.
Copyright Schrodinger, LLC. All rights reserved.
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schrodinger.utils.subprocess.abs_schrodinger_path(prog_name)[source]¶ Search for
prog_namein the $SCHRODINGER and $SCHRODINGER/utilities directories. If found, returnsprog_nameprepended with the correct directory path. If not found,prog_nameis returned unchanged.- Parameters
prog_name (str) – name of the executable to search for
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schrodinger.utils.subprocess.call(cmd, **kwargs)[source]¶ Run a command with arguments and wait for it to return. Return the exit status.
Look for executables in $SCHRODINGER and $SCHRODINGER/utilities, and provide an interpreter if needed.
- Parameters
cmd (list of str) – The command to be run, specified as a list of strings.
- Return type
int
- Returns
Exit status of the command.
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schrodinger.utils.subprocess.check_call(cmd, **kwargs)[source]¶ Run a command with arguments and wait for it to return. Raises an exception if the command exits with a non-zero exit status. Return the exit status.
Look for executables in $SCHRODINGER and $SCHRODINGER/utilities, and provide an interpreter if needed.
- Parameters
cmd (list of str) – The command to be run, specified as a list of strings.
- Return type
int
- Returns
Exit status of the command.
- Raises
subprocess.CalledProcessError – If the exit code is not 0.
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schrodinger.utils.subprocess.check_output(cmd, **kwargs)[source]¶ Run a command with arguments and wait for it to return. Raises an exception if the command exits with a non-zero exit status. Return the
Look for executables in $SCHRODINGER and $SCHRODINGER/utilities, and provide an interpreter if needed.
- Parameters
cmd (list of str) – The command to be run, specified as a list of strings.
- Return type
str
- Returns
StdOut of the command.
- Raises
subprocess.CalledProcessError – If the exit code is not 0.
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schrodinger.utils.subprocess.Popen(cmd, **kwargs)[source]¶ A wrapper for the builtin subprocess module’s Popen class. This function will return a subprocess Popen instance, passing all kwargs on to the underlying class.
The only difference is that it will automatically look for executables in $SCHRODINGER and $SCHRODINGER/utilities, and provide an interpreter if needed.
- Parameters
cmd (list of str) – The command to be run, specified as a list of strings.