Python 3, trouble with "import pickle"

Support Resolved
1

I’m learning how to use pickle/unpickle to save useful background info for my program, but Komodo IDE/Python doesn’t seem to accept this little program from Python Wiki.

#!/usr/bin/env python3
# Save a dictionary into a pickle file.

import pickle
SvNam = "save.p"
favorite_color = { "lion": "yellow", "kitty": "red" }
pickle.dump( favorite_color, open(SvNam, "wb"))

Pressing F5 gives error output as follows:

Traceback (most recent call last):
  File "D:\Python 3\PitchStrucs\PickleEx.py", line 4, in < module>
    import pickle
  File "< frozen importlib._bootstrap>", line 0, in _find _and _load
  File "C:\Python34\lib\base64.py", line 536, in encodebytes
    _ input_type_check(s)
  File "C:\Python34\lib\base64.py", line 522, in _ input_type_check
    raise TypeError(msg) from err
TypeError: expected bytes-like object, not str

(I have inserted blanks in a few places where your display misinterprets “_” and “<”)

Any idea what might be wrong? I’m using Komodo IDE, ver. 9.1.0.87337, Python 3 ver. 3.4.3
I have not had trouble with anything else in Komodo IDE that I have used so far in my measly little experience.

2

Does the script run fine when running it from the command line?

3

Yes, from command line it runs just right. In fact that’s why I posted it here. It seems to me like a Komodo problem, not a Python problem.

4

Is your file marked as Python or Python3?

5

It’s Python 3, as you can see in the first line. Hope I did it properly.

6

To confirm though, does the language menu at the bottom of Komodo actually say Python3? It does not necessarily have to reflect what you have in your file there.

7

Eh?? Just below the edit window there’s a status line giving the path to the file I’m editing, the “file encoding” (ASCII), the “file type” (Python3), and the line and column number. Next to “Python3” there’s a funny little icon , which corresponds to “Python3” in the long list of languages that pops up when you press it. And in this list there’s a checkmark next to “Python3”. Does this answer your question?? Is my file in fact a Python3 file? Sorry, I’m not sure where to find “the bottom of Komodo”. I hope this helps.

8

I’m trying your script on linux using Python 3.4.3, it runs without any issues both in and outside of Komodo.

@careyh could you see if it works on WIndows?

9

@nathanr, runs without issue for me.

Cheers,

  • Carey
10

I have the same issue, am on Mac OS X Yosemite. I have a mixed project of Python 2 and 3 code, which I cannot post here. The project runs without problems from the command line.

Here’s the traceback:
Traceback (most recent call last):
File “/Users/Shared/Projects/my_project/tools/my_code.py”, line 23, in
from pprint import pprint, pformat
File “”, line 0, in _find_and_load
File “”, line 0, in _find_and_load
File “/Users/Shared/Virtualenvs/myvenv/lib/python3.4/base64.py”, line 536, in encodebytes
_input_type_check(s)
File “/Users/Shared/Virtualenvs/myvenv/lib/python3.4/base64.py”, line 522, in _input_type_check
raise TypeError(msg) from err
TypeError: expected bytes-like object, not str