Now you can see the error has disappeared. Click the Finish button to complete the PyDev project import.

Click the Directory… button and browse the existing PyDev project saved directory.Click eclipse menu item File -> Open Projects from File Systems….Please do not check Delete project contents on disk checkbox. Click the OK button in the popup dialog to delete the project from eclipse.Right-click the PyDev project, then click Delete menu item in the popup menu list.

To make the python interpreter change take effect, you need to follow the below steps, otherwise, the Unresolved Import error still exists.

How To Make Python Interpreter Change Take Effect. Now click Apply and Close button to close the python interpreter configuration panel to apply your changes.Select the python interpreter and click the Libraries tab at the right panel bottom, you can see the libraries list that you selected. Click the OK button again, now you can see the python interpreter has been added.Click the OK button, then select all the libraries that will be added in the PYTHONPATH system variable.Click Choose from list ( for macOS) or New -> Choose from list ( for Windows ) button on the right panel, then select the python interpreter which you need in the popup dialog, generally we choose the newest python version.If there has one python interpreter added, maybe this interpreter is not correct, you should change it. If you can not see a python interpreter configured on the right panel, then just add it. Click PyDev -> Interpreters -> Python Interpreter menu item on the left panel.If you use Windows OS, you should click Window -> Preferences menu item. Click Eclipse -> Preferences… menu item at eclipse left top menu in macOS.Open eclipse which has installed the PyDev plugin ( How To Run Python In Eclipse With PyDev ).How To Change Python Interpreter Correctly In Eclipse PyDev Project.

How to use eclipse panel