CODEWITHSUNDEEP
pythonmodulepython-importenthought
DilithiumMatrix
DilithiumMatrix

Reputation: 18657

added path in PYTHONPATH changes sys.path entires

I have numerous versions of packages installed. My base, system python is ~/Library/Enthought/Canopy_64bit/User/lib/python2.7/
but I also have an application ('yt') which installed its own python to
~/Applications/yt/yt-x86_64/lib/python2.7/

I've added the yt path so that I can import a module which it includes, when I run my system python. The problem is, when I add the yt-path to PYTHONPATH it adds a ton of other directories, to higher entries in my sys.path so that when I try to import numpy (for example), I end up getting the yt-version, instead of my system version.

Is there a way to keep my sys.path from being modified?

Upvotes: 0

Views: 148

Answers (1)

Martin Konecny
Martin Konecny

Reputation: 59681

PYTHONPATH values are always inserted in front of the standard python library paths in sys.path

One potential approach around this problem is to add the yt path to sys.path yourself.

So try

# append to the *end* of the system path.
sys.path.append('~/Applications/yt/yt-x86_64/lib/python2.7/path/to/libs')

this will put the yt specific modules at the end of the list, and your system's numpy will be found/imported first.

Upvotes: 2

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