如何在Python中设置环境变量 [英] How to set environment variables in Python

问题描述

我需要在python脚本中设置一些环境变量，并希望从python（shell脚本）中调用的所有其他脚本，这些脚本将作为子进程来查看环境变量集。该值是一个数字。

I need to set some environment variables in the python script and I want all the other scripts that are called from python (shell scripts) which will be child process to see the environment variables set. The value is a number.

如果我做 os.environ [DEBUSSY] = 1 ，它抱怨说 1 必须是字符串。
一旦我设置它，我也想知道如何读取python中的环境变量（在脚本的后面部分）。

If I do os.environ["DEBUSSY"] = 1, it complains saying that 1 has to be string. I also want to know how to read the environment variables in python (in the later part of the script) once I set it.

推荐答案

环境变量必须是字符串，所以使用

Environment variables must be strings, so use

os.environ["DEBUSSY"] = "1"

设置变量 DEBUSSY 到字符串 1 。要稍后访问此变量，只需使用

to set the variable DEBUSSY to the string 1. To access this variable later, simply use

print os.environ["DEBUSSY"]

子进程自动继承父进程的环境 - 不需要您的特殊操作。

Child processes automatically inherit the environment of the parent process -- no special action on your part is required.

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