问题
I just started playing around with Theano but have a strange problem in Eclipse. I am trying to import the config module to run some example code. The import works fine and I can see what's in the module.
Here is the simple code I am trying:
from theano import config
print config
This works fine and I get an output like:
floatX (('float64', 'float32'))
Doc: Default floating-point precision for python casts
Value: float32
...
and some more lines like that. Unfortunately if I use the following code, I get an "undefined variable from import"-error for the floatX:
from theano import config
print config.floatX
This is only happening in Eclipse. In the console I get "float32", which is the correct output. Any idea why this is happening and how I can get to give me the value behind that variable? Thank you!
System: OSX 10.9.2 / Python: 2.7.6 (Macports installation) / Theano: 0.6.0 (Macports installation) / Eclipse: Kepler Service Release 2
回答1:
ok, I found the answer finally. I never really had an error. I did not find that out because I never tried to actually run the script because the editor indicated there was an error... The maker of PyDev answered the following question himself and provides a workaround:
How do I fix PyDev "Undefined variable from import" errors?
For code in your project, the only way is adding a comment saying that you expected that (the static code-analysis only sees what you see, not runtime info -- if you opened that module yourself, you'd have no indication that main was expected).
You can use ctrl+1 (Cmd+1 for Mac) in a line with an error and pydev will present you an option to add a comment to ignore that error.
回答2:
Is Eclipse using the same version of python as what you are running in the shell (console)? Does Eclipse know where to find theano- does it have a PYTHONPATH setting for it?
What OS are you using?
来源：https://stackoverflow.com/questions/22675274/python-wont-find-variable-in-module