Install the Python plugin PeDev in eclipse
The first step: Toolbar Help->Install New Software->Add
name:PyDev
Location:http://pydev.org/updates
Then select "OK", wait for a while, the result list will appear, select the red box in the figure below and 
click the "next" button, Eclipse will automatically find the required dependencies, after checking, a page will pop up to agree to the agreement, click "accept", and then "finish"
Step 2: Restart eclipse
The third step: the end of the installation
Problems and solutions encountered when creating a new Python project:
Step 1: Right-click in the blank, New->Other->PyDev Project 
Python's interpreter is not specified
Step 2: ( Solution ) Toolbar Window->Preferences->PyDev-Interpreters-Python Interpreter
After adding the name and the path of python.exe, click "OK", then it will jump out of the Python related file directory, select "OK", then select "apply", and finally click "OK"
The third step: New->Other->PyDev Project, the new Python project is successful
Step 4: End