Frequently Asked Questions of Python 'Sarge' Library

Python's "SARGE" library often see questions answers "Sarge" is a Python library for executing the shell command.This article will answer the common questions about the Python "Sarge" library, and explain the complete programming code and related configuration when necessary. Question 1: What is the "Sarge" library? Answer: SARGE is a Python library for executing the shell command.It provides a simple and powerful interface for creating and controlling sub -processes in Python. Question 2: How to install the "Sarge" library? Answer: You can use PIP to install the "Sarge" library in Python.Just run the following command in the command line: pip install sarge Question 3: How to use the "Sarge" library to execute the shell command in Python? Answer: The following is a sample code that shows how to use the "Sarge" library to execute the shell command: python from sarge import run # Execute the shell command run("ls -l") # Get command output result = run("echo 'Hello World'") print(result.stdout.text) Question 4: How to capture the output of the command? Answer: You can use the `Run` function provided by the` Sarge` library to capture the output of the command.The `Run` function returns a` Command` object, you can obtain standard output, error output and other content from this object.This is an example code: python from sarge import run result = run("echo 'Hello World'") # Get standard output print(result.stdout.text) # Get error output print(result.stderr.text) Question 5: How to check whether the command is successfully executed? Answer: You can use the `ReturnCode` property of the` Command` object to check whether the command is successfully executed.If the command is successfully executed, the `ReturnCode` will be 0, otherwise it will be a non -zero value.This is an example code: python from sarge import run result = run("ls -l") if result.returncode == 0: Print ("Command successfully execute") else: Print ("command execution fails") Question 6: How to pass the parameters to command? Answer: You can pass the parameters in the `run` function as part of the command.The following is an example code: python from sarge import run name = "John" # Use parameter execution command result = run("echo 'Hello {name}'") # Get command output print(result.stdout.text) Question 7: How to execute commands in the background? Answer: If you want to execute commands in the background without blocking the execution of the Python script, you can set the `Background = TRUE` parameter in the` run` function to true.The following is an example code: python from sarge import run # Execute commands in the background result = run("long_running_command", background=True) This is some common answers to the Python "Sarge" library.I hope this can help you better understand and use the "Sarge" library.For more details, see the official document of the "SARGE" library.