PyCharm “no module named sys”

Question

Using PyCharm community edition and Python 2.7,

import traceback
import sys

No problem on the first line, which implies that I have pointed PyCharm correctly at the interpreter. However, I get "no module named sys" at the second line (which is strange, as sys is a builtin - if you can find the interpreter, you have found sys).

Any ideas?

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[Update] to the commentators so far, thanks.

The IDE does not offer sys for auto-complete after import sy.

When I start the interpreter which the IDE uses form the command line, then import sys works.

Answer 1

I have had this issue with PyCharm before. I find that reloading the interpreter fixes the issue.

File -> Settings -> Project -> Project Interpreter

Remove the interpreter and add it again.

Answer 2

I had this issue and I resolved it by updating the default project settings under File -> Default Settings -> Project Interpreter and then in the drop down list for Project Interpreter, selecting the same interpreter as the Run Configuration was using (in my case python 3.6)

Answer 3

Maybe you're updating your PYTHONPATH variable in your .bashrc file? It started working on, after comment PATH PATH in bash_profile.

Answer 4

PyCharm has virtual Enviroment and System Interpreter. Select system interpreter

Answer 5

Make sure you've chosen the right Interpreter path and check some other run settings. Go to Run > Edit Configurations... and check, if some configurations seem to be wrong.

EDIT: Under Linux, you have often Python 2 and 3 installed, be sure to pick the correct one.

Answer 6

I had this problem as well and was completely stymied until I tried the following:

File -> 
Default Settings -> 
Project Interpreter
  dropdown (click the arrow) ->
Show All ->
  select your interpreter ->
Show Paths
  (bottom icon on right) ->
Add Path ->
  Enter path to libraries
  (in my case this was c:\Python35\Lib).