Python 3.5+Anaconda环境中无法找到cPickle模块的问题

Hey there! That error you're hitting makes total sense—let me break it down and fix it for you.

The Root Cause #

In Python 3.x, the cPickle module (the faster C-backed version of pickle from Python 2) got merged directly into the standard pickle module. Python 3's pickle now includes all the performance benefits of the old cPickle, so there's no need for a separate module anymore. That's exactly why trying to import cPickle throws an error.

The Fixes #

You’ve got two straightforward options here:

1. Directly use pickle (recommended for Python 3-only code)
   Just swap out your import line with this:

   import pickle
   

   All the functions you’d use from cPickle (like pickle.load(), pickle.dump()) work exactly the same way here, and you’ll get the same fast performance you expected from cPickle.

2. Add cross-version compatibility (if your code needs to run on Python 2 too)
   If you’re working with code that has to support both Python 2 and 3, use a try-except block to fall back to the right module:

   try:
       # Python 2 case
       import cPickle as pickle
   except ImportError:
       # Python 3 case
       import pickle
   

Quick Note on Your Environment #

Your Anaconda Python 3.5 setup (even without a virtual environment) isn’t the problem here—this is just a Python 2 vs 3 module naming change. No need to tweak your environment to fix this!

内容的提问来源于stack exchange，提问作者Tom Walker