问题
So I just installed SubnetTree (http://www.icir.org/robin/pysubnettree/) and if I open the Python interactive interpreter I can successfully import it without any error messages. I use it in one of my programs and can successfully run it without a hitch. However, Eclipse marks the import as an error, and this is a problem as I use Eclipse for debugging. I have gone to preferences and have restored the Python interpreter I am using to no avail. I was able to merely restore the Python interpreter exit, and reopen it on my other machine(OS X 10.5, I am now using OS X 10.6) and it identified SubnetTree just fine. Any idea of how I should go about this? Thanks in advance.
回答1:
if you already tried "refreshing" your interpreter's PYTHONPATH (in Eclipse's Pydev Python interpreter configuration) and it didn't work you could try deleting the interpreter from the list and creating it again. When doing this, you should get all your modules loaded correctly, even the missing new modules.
回答2:
PyDev version 3.6, on the Eclipse Preferences -> PyDev -> Interpreters preferences pane, offers a button labeled "Check if interpreters are synchronized with environment". On my mac and Eclipse Luna, clicking on this button triggered some behind-the-scenes magic that solved my problem of PyDev not noticing a new installation of PeeWee. I saw a message flash briefly in the lower-right corner of the main Eclipse window "Synch System PYTHONPATH." I did not remove nor re-add the interpreter (Python 2.7), restarting Eclipse did not solve the problem either; but clicking this button did.
回答3:
Yes - it works! I've been stuck on this for three days. Go to Project, Properties, PyDev - Interpreter/Grammar, "Click here to configure an interpreter not listed", highlight & Remove python (C:/Python27\Python.exe), Auto Configure (brings up a list below that you can review and checkmark as needed), then click on OK.
来源：https://stackoverflow.com/questions/3732093/how-to-make-eclipse-pydev-plugin-recognize-newly-installed-python-modules