Issue437215

It appears that newlines aren't escaped properly when 
you try to pickle a string in text mode (I actually 
had strings inside a list and was pickling the list). 
When you try to unpickle the data, it blows up.

To duplicate, try something like:

  import pickle
  s1="line1\nline2\nline3"
  s2="line4\nline5\nline6"
  l = [s1, s2]
  p = pickle.dumps(l)   # newlines won't be escaped
  l2 = pickle.loads(p)  # blows up

Pickling in binary mode seems to work fine. ie:
  ...
  p = pickle.dumps(l, 1)
  l2 = pickle.loads(p)  # works correctly

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user_id=4201

I can reproduce this in 2.0. It is fixed in 2.1a1.