Python TypeError when compiling sketch

[xtaco]

Hi All,

I am not able to compile any sketches due to this error. Anyone come across this?

Traceback (most recent call last):
  File "/home/user/Arduino/hardware/espressif/esp32/tools/gen_esp32part.py", line 356, in <module>
    main()
  File "/home/user/Arduino/hardware/espressif/esp32/tools/gen_esp32part.py", line 345, in main
    table.verify()
  File "/home/user/Arduino/hardware/espressif/esp32/tools/gen_esp32part.py", line 83, in verify
    for p in sorted(self):
TypeError: '<' not supported between instances of 'PartitionDefinition' and 'PartitionDefinition'
exit status 1
Error compiling for board ESP32 Dev Module.

[me-no-dev]

check if there are no errors on your side in this file.

[carlgonz]

Seems to be a problem with the default python version. The script gen_esp32part.py seems to work only with python2

[bessl]

I had the same problem. I was using the Python 3 interpreter. You can fix it temporary by doing this:

mkdir /tmp/bin
PATH=/tmp/bin:$PATH
ln -s /usr/bin/python2 /tmp/bin/python

when you start arduino ide from your terminal window it should work!

[me-no-dev]

I'll turn it into binary next time around and will not be a problem.

[mcgiver0510]

in ArchLinux you can
change this line in platform.txt
tools.gen_esp32part.cmd=python "{runtime.platform.path}/tools/gen_esp32part.py"
to
tools.gen_esp32part.cmd=python2 "{runtime.platform.path}/tools/gen_esp32part.py"
lg

[dmopalmer]

Is it worthwhile to make gen_esp32part.py compatible with python3, or will that just kick the problem to the next incompatible step?

This requires changing line 83 of gen_esp32part.py something like (untested code):

+        for p in sorted(self, key=lambda x:x.offset):
-        for p in sorted(self):

[me-no-dev]

TBH I'm no python coder :) I get around with it and can write some stuff, but I am in no way intimate with it to the point where I know the differences between 2.7 and 3 and how to make things work.
maybe try/catch could do the trick for both versions?

[copercini]

Solved here: espressif/esp-idf#577 =)