在Python中读写环境变量? [英] Reading and writing environment variables in Python?

问题描述

我的python脚本，它调用了许多python函数和shell脚本.我想在Python(主要调用函数)中设置一个环境变量，并在所有子进程中(包括shell脚本)设置该变量，以查看环境变量集.

My python script which calls many python functions and shell scripts. I want to set a environment variable in Python (main calling function) and all the daughter processes including the shell scripts to see the environmental variable set.

我需要设置一些这样的环境变量:

I need to set some environmental variables like this:

DEBUSSY 1
FSDB 1

1是数字，而不是字符串.另外，如何读取存储在环境变量中的值? (就像另一个Python子脚本中的DEBUSSY/FSDB一样.)

1 is a number, not a string. Additionally, how can I read the value stored in an environment variable? (Like DEBUSSY/FSDB in another python child script.)

推荐答案

尝试使用os模块.

import os

os.environ['DEBUSSY'] = '1'
os.environ['FSDB'] = '1'

# Open child processes via os.system(), popen() or fork() and execv()

someVariable = int(os.environ['DEBUSSY'])

请参见os.environ上的 Python文档.另外，有关生成子进程的信息，请参见Python的子进程文档.

See the Python docs on os.environ. Also, for spawning child processes, see Python's subprocess docs.

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