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From the documentation :. Your method would work too if the environmental variable exists. The difference with using os. You might have to restart windows to be able to read the environment variable that you set through the control panel. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.

Learn more. How to read Windows environment variable value? Ask Question. Asked 9 years, 2 months ago. Active 12 months ago. Viewed 54k times. I tried this: os. Is there any way suitable for all operating systems? Improve this question. Ahmad Soboh Ahmad Soboh 1 1 gold badge 9 9 silver badges 17 17 bronze badges. Are you sure that you defined variable in a right way? How to define it? You can check the variable in the console using the command SET.

Did you set the environment variable after starting the shell you’re running Python from? Add a comment. Active Oldest Votes. Try using the following: os. Improve this answer. Niek de Klein Niek de Klein 7, 18 18 gold badges 67 67 silver badges bronze badges. Whatever the combination is, by default it is printing out None. Jim Smith Jim Smith 3 3 silver badges 9 9 bronze badges. Or just restarting the console.

This worked! I tried just restarting Spyder and Jupyter Notebook, and neither could find the environment variables I needed. Once I restarted my computer, the os. It will list all the paths which are set. Sivasubramaniam Arunachalam Sivasubramaniam Arunachalam 7, 15 15 gold badges 72 72 silver badges bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

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In this article, you will learn how to navigate the Java IntelliJ IDEA to configure environment variables necessary for your project こちらは、コマンドプロンプトやターミナルでPythonコマンドを実行して「PATHが見つからない」とエラーが出た場合に設定します。もう一つは「PYTHONPATH」


4. Windows で Python を使う — Python ドキュメント

We can add Python to Path manually in Windows 10 by opening the Control Panel and selecting System and Security. Then choose System. Click Advanced System Settings and then click Environment Variables under the Advanced tab. Under the System variables, select the Path variable and click Edit. Click the New button, and paste the full path to. Jul 08,  · Try using the following: (‘MyVar’) From the documentation: (varname [, value]) Return the value of the environment variable varname if it exists, or value if it doesn’t. value defaults to None. Availability: most flavors of Unix, Windows. So after testing it. 1 Answer1. Active Oldest Votes. 2. You have to call the Windows SETX from your python code in order to make your environment value saved from your code. (“SETX {0} {1} /M”.format (“start”, “test”)) should do the trick. Dont forget to run your script as Administrator. In order for your command prompt to see the changes, make sure you.