Kivy安装失败，命令提示符提示语法错误，求排查解决方法

Hey there, let's break down what's going on here and fix it step by step!

First off, that invalid syntax error is almost certainly not a PATH issue—it means you probably tried running pip commands inside the Python interactive shell (the one with the >>> prompt) instead of the regular Command Prompt. Pip is a command-line tool, so it needs to be run directly in CMD/PowerShell, not as Python code.

As for your PATH setup, there are a few small mistakes in the entries you added:

• You bundled multiple paths (C:\Windows;C:\Windows\System32;C:\Python27) into a single PATH entry—each path should be a separate entry (or separated by semicolons, but Windows' system PATH already includes the Windows directories, so you don't need to re-add them).
• Wrapping paths in double quotes is unnecessary here (only needed if your path has spaces), which might cause unexpected behavior.

1. Exit the Python Interactive Shell #

If your prompt starts with >>>, you're in the Python shell. Type exit() and hit Enter to get back to the regular Command Prompt (looks like C:\Users\YourName>).

2. Fix Your PATH Environment Variable #

1. Press Win+R, type sysdm.cpl, and hit Enter to open System Properties.
2. Go to the Advanced tab, then click Environment Variables.
3. Under User Variables, find the Path entry and click Edit:
   • Delete the three problematic entries you added earlier.
   • Add these two separate entries:
     • C:\Python27
     • C:\Python27\Scripts
4. Click OK to save changes, then close all open CMD windows and open a new one—PATH updates only take effect in new terminal sessions.

3. Verify Python & Pip Are Working #

In your new CMD window, run these commands to confirm everything is set up correctly:

python --version

You should see something like Python 2.7.x if PATH is configured right.

Then check pip:

pip --version

This should show pip's version info if it's accessible.

4. Reinstall Kivy (With Python 2.7-Compatible Versions) #

Python 2.7 is no longer supported, so we need to use the last compatible versions of pip and Kivy:
First, upgrade pip to the final version that works with Python 2.7:

python -m pip install --upgrade pip==20.3.4

Then install the last stable Kivy version for Python 2.7:

pip install kivy==1.11.1

5. Test Kivy Installation #

Run this quick test to make sure Kivy works:

python -c "import kivy; kivy.require('1.11.1'); print('Kivy is up and running!')"

If you see the success message without errors, you're good to go.

Just a heads up: Python 2.7 reached end-of-life in 2020, so most libraries (including Kivy) no longer receive updates for it. If you're just starting out with Kivy, switching to Python 3.x will give you access to the latest features and support.

内容的提问来源于stack exchange，提问作者Josh Gimenes