pickle.load and pickle.loads fail

[peterhinch]

Using code loaded with upip on the Unix build, I get

MicroPython v1.16-243-gd608d0ed7 on 2021-08-29; linux version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> import pickle
>>> with open('20210831', 'r') as f:
...     a = pickle.load(f)

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/home/adminpete/.micropython/lib/pickle.py", line 11, in load
  File "/home/adminpete/.micropython/lib/pickle.py", line 15, in loads
AttributeError: 'str' object has no attribute 'decode'
>>> 

Commenting out line 15 fixes the problem with my data.

There is another issue in that the code downloaded does not match that in micropython-lib. Both have the error, but in the micropython-lib version it is on a different line. While the hack has fixed my immediate problem it would be interesting to know why these versions differ and which is correct.

[peterhinch]

This error has gone away with firmware version 1.17 so I'll close this.

I'm still concerned that upip can produce different versions from modules in micropython-lib. I thought this was fixed some time ago.