That the special file os.devnull will be used. That a new pipe to the child should be created. Integer), an existing file object, and None. Valid valuesĪre PIPE, DEVNULL, an existing file descriptor (a positive Standard output and standard error file handles, respectively. Stdin, stdout and stderr specify the executed program’s standard input,
The string must simply name the program to be executed without specifying If passingĪ single string, either shell must be True (see below) or else Preferred, as it allows the module to take care of any required escapingĪnd quoting of arguments (e.g. Providing a sequence of arguments is generally It is passed directlyĪrgs is required for all calls and should be a string, or a sequence of Variables for the new process these are used instead of the defaultīehavior of inheriting the current process’ environment. If env is not None, it must be a mapping that defines the environment Otherwise, file objects are opened in binary mode. Specified encoding and errors or the io.TextIOWrapper default. If encoding or errors are specified, or universal_newlines is true,įile objects for stdin, stdout and stderr are opened in text mode using the Attributes of thatĮxception hold the arguments, the exit code, and stdout and stderr if they If check is true, and the process exits with a non-zero exit code, aĬalledProcessError exception will be raised. Stdin=PIPE, and the stdin argument may not be used as well. Used, the internal Popen object is automatically created with If used it must be a byte sequence, or a string ifĮncoding or errors is specified or universal_newlines is true. The input argument is passed to municate() and thus to the TimeoutExpired exception will be re-raised after the child process If the timeoutĮxpires, the child process will be killed and waited for. The timeout argument is passed to municate(). PIPE for the stdout and/or stderr arguments. This does not capture stdout or stderr by default. Input and check, all the arguments to this function are passed through to Same as that of the Popen constructor - apart from timeout,
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 run ( args, *, stdin=None, input=None, stdout=None, stderr=None, shell=False, cwd=None, timeout=None, check=False, encoding=None, errors=None, env=None ) ¶ The run() function was added in Python 3.5 if you need to retainĬompatibility with older versions, see the Older high-level API section. Underlying Popen interface can be used directly. The recommended approach to invoking subprocesses is to use the run()įunction for all use cases it can handle.
0 kommentar(er)
