从另一个Python脚本运行一个Python脚本，并传入参数[重复]

红太狼 2022-11-28 13:59 174阅读 0赞

本文翻译自：[Run a Python script from another Python script, passing in arguments \[duplicate\]][Run a Python script from another Python script_ passing in arguments _duplicate]

*This question already has an answer here:* **这个问题已经在这里有了答案：**

*  *What is the best way to call a script from another script?* **从另一个脚本调用一个脚本的最佳方法是什么？** *10 answers* **10个答案**

*I want to run a Python script from another Python script.* **我想从另一个Python脚本运行一个Python脚本。** *I want to pass variables like I would using the command line.* **我想像使用命令行一样传递变量。**

*For example, I would run my first script that would iterate through a list of values (0,1,2,3) and pass those to the 2nd script `script2.py 0` then `script2.py 1` , etc.* **例如，我将运行我的第一个脚本，该脚本将遍历值列表（0,1,2,3）并将其传递给第二个脚本`script2.py 0`然后`script2.py 1`等。**

*I found [Stack Overflow question 1186789][] which is a similar question, but ars's answer calls a function, where as I want to run the whole script, not just a function, and balpha's answer calls the script but with no arguments.* **我发现了[Stack Overflow问题1186789][Stack Overflow question 1186789] ，这是一个类似的问题，但是ars的答案调用了一个函数，在这里我想运行整个脚本，而不仅仅是函数，而balpha的答案则调用了脚本，但没有参数。** *I changed this to something like the below as a test:* **我将其更改为以下内容作为测试：**

execfile("script2.py 1")

*But it is not accepting variables properly.* **但是它没有正确接受变量。** *When I print out the `sys.argv` in script2.py it is the original command call to first script "\['C:\\\\script1.py'\].* **当我在script2.py中打印`sys.argv` ，它是对第一个脚本“ \['C：\\\\ script1.py'\]的原始命令调用。**

*I don't really want to change the original script (ie script2.py in my example) since I don't own it.* **我真的不想更改原始脚本（例如，在我的示例中为script2.py），因为我不拥有它。**

*I figure there must be a way to do this;* **我认为必须有一种方法可以做到这一点；** *I am just confused how you do it.* **我只是很困惑你怎么做。**

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### \#1楼 ###

参考：[https://stackoom.com/question/fRPB/从另一个Python脚本运行一个Python脚本-并传入参数-重复][https_stackoom.com_question_fRPB_Python_Python_-_-]

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### \#2楼 ###

import subprocess
    subprocess.call(" python script2.py 1", shell=True)

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### \#3楼 ###

*I think the good practice may be something like this;* **我认为好的做法可能是这样的；**

import subprocess
    cmd = 'python script.py'
    
    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
    out, err = p.communicate() 
    result = out.split('\n')
    for lin in result:
        if not lin.startswith('#'):
            print(lin)

*according to documentation The subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes.* **根据文档，子流程模块允许您生成新流程，连接到其输入/输出/错误管道并获取其返回代码。** *This module intends to replace several older modules and functions:* **该模块打算替换几个较旧的模块和功能：**

os.system
    os.spawn*
    os.popen*
    popen2.*
    commands.*

*Use communicate() rather than .stdin.write, .stdout.read or .stderr.read to avoid deadlocks due to any of the other OS pipe buffers filling up and blocking the child process.* **使用communication（）而不是.stdin.write，.stdout.read或.stderr.read来避免死锁，这是由于其他任何OS管道缓冲区中的任何一个填满并阻塞了子进程造成的。** *[Read Here][]* **[在这里阅读][Read Here]**

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### \#4楼 ###

*Try using [`os.system`][os.system] :* **尝试使用[`os.system`][os.system] ：**

os.system("script2.py 1")

*`execfile` is different because it is designed to run a sequence of Python statements in the current execution context.* **`execfile`有所不同，因为它旨在在*当前*执行上下文中运行一系列Python语句。** *That's why `sys.argv` didn't change for you.* **这就是`sys.argv`不会为您更改的原因。**

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### \#5楼 ###

*SubProcess module:* **子流程模块：**  
*[http://docs.python.org/dev/library/subprocess.html\#using-the-subprocess-module][http_docs.python.org_dev_library_subprocess.html_using-the-subprocess-module]* **[http://docs.python.org/dev/library/subprocess.html\#using-the-subprocess-module][http_docs.python.org_dev_library_subprocess.html_using-the-subprocess-module]**

import subprocess
    subprocess.Popen("script2.py 1", shell=True)

*With this, you can also redirect stdin, stdout, and stderr.* **这样，您还可以重定向stdin，stdout和stderr。**

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### \#6楼 ###

如果os.system对您来说功能不足，那么可以使用subprocess [模块][Link 1] 。

[Run a Python script from another Python script_ passing in arguments _duplicate]: https://oldbug.net/q/fRPB/Run-a-Python-script-from-another-Python-script-passing-in-arguments-duplicate
[Stack Overflow question 1186789]: https://stackoverflow.com/questions/1186789/what-is-the-best-way-to-call-a-python-script-from-another-python-script
[https_stackoom.com_question_fRPB_Python_Python_-_-]: https://stackoom.com/question/fRPB/%E4%BB%8E%E5%8F%A6%E4%B8%80%E4%B8%AAPython%E8%84%9A%E6%9C%AC%E8%BF%90%E8%A1%8C%E4%B8%80%E4%B8%AAPython%E8%84%9A%E6%9C%AC-%E5%B9%B6%E4%BC%A0%E5%85%A5%E5%8F%82%E6%95%B0-%E9%87%8D%E5%A4%8D
[Read Here]: https://docs.python.org/2/library/subprocess.html#replacing-os-system
[os.system]: http://docs.python.org/library/os.html#os.system
[http_docs.python.org_dev_library_subprocess.html_using-the-subprocess-module]: http://docs.python.org/dev/library/subprocess.html#using-the-subprocess-module
[Link 1]: http://docs.python.org/library/subprocess.html#module-subprocess