In addition, stdout is not permitted as an argument, as it is used Same as that of the Popen constructor - this functions passes all Returncode attribute and any output in the TheĬalledProcessError object will have the return code in the If the return code was non-zero it raises a CalledProcessError. Run command with arguments and return its output. check_output ( args, *, stdin=None, stderr=None, shell=False, universal_newlines=False, timeout=None ) ¶ TimeoutExpired exception will be re-raised after the child processĬhanged in version 3.3: timeout was added. If the timeoutĮxpires, the child process will be killed and then waited for again. The timeout argument is passed to Popen.wait(). Supplied arguments other than timeout directly through to that interface. Same as that of the Popen constructor - this function passes all The full function signature is largely the In Frequently Used Arguments (hence the use of keyword-only notation The arguments shown above are merely the most common ones, described below call ( args, *, stdin=None, stdout=None, stderr=None, shell=False, timeout=None ) ¶ Use cases, the underlying Popen interface can be used directly. The recommended approach to invoking subprocesses is to use the followingĬonvenience functions for all use cases they can handle.
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