Python 3.7（32位）命令提示符交互模式设置问题咨询

Hey there! Let's get this sorted out for you—since you mentioned your Python37 folder is on the desktop, the first problem is probably the incorrect path you entered in the environment variable. Let's walk through the correct steps step by step:

Step 1: Get the Correct Python Folder Path #

• Go to your desktop, right-click the Python37 folder, and select Properties.
• Switch to the Security tab, then look for the Object name field—this is the full, correct path to your Python folder (it should look something like C:\Users\YourUsername\Desktop\Python37).
• Copy this path to your clipboard.

Step 2: Update Your Environment Variables Properly #

You don't need a separate Python variable—instead, we'll add the Python path to the system Path variable (this is what lets you run python from any command prompt window):

• Open This PC → right-click → Properties → Advanced System Settings → Environment Variables.
• In the System Variables section (the lower panel), find the Path variable and click Edit.
• Click New, then paste the full path you copied earlier.
• Add another new entry: paste the same path but add \Scripts to the end (like C:\Users\YourUsername\Desktop\Python37\Scripts). This lets you use pip to install packages later.
• If you already created the Python variable earlier, you can either delete it or update its value to the correct desktop path (though it's not strictly necessary for running Python from the command line).
• Click OK on all the windows to save changes.

Step 3: Verify It Works #

• Close any open command prompt windows, then open a new one (important—old windows won't pick up the new environment variables).
• Type python --version and press Enter. If you see something like Python 3.7.x (32-bit), you're all set!

A quick note: IDLE should work fine directly from its shortcut on the desktop even without environment variables, since it points straight to the Python executable. The environment variable is mainly for using Python in the command prompt.

内容的提问来源于stack exchange，提问作者Ani Q