Ubuntu no module pyserial

OS: 4.18.0-25-generic #26~18.04.1-Ubuntu
IDE: Arduino 1.8.9

Ubuntu Fresh installed

 python -m pip install pyserial
...
You are using pip version 10.0.1, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
 gone wit it

Then

pip install pyserial
Traceback (most recent call last):
  File "/home/marius/.local/bin/pip", line 7, in <module>
    from pip._internal import main
ModuleNotFoundError: No module named 'pip._internal'

Then

marius@pegpc:~$ python3 -m pip install pyserial
Collecting pyserial
  Using cached https://files.pythonhosted.org/packages/0d/e4/2a744dd9e3be04a0c0907414e2a01a7c88bb3915cbe3c8cc06e209f59c30/pyserial-3.4-py2.py3-none-any.whl
Installing collected packages: pyserial
Successfully installed pyserial-3.4

Then edit esptool.py and did

#!/usr/bin/env python3
#
#

Still the error persists

Traceback (most recent call last):
  File "/home/marius/.arduino15/packages/esp32/tools/esptool_py/2.6.1/esptool.py", line 39, in <module>
    import serial
ImportError: No module named serial
exit status 1
Error compiling for board ESP32 Wrover Module.

[lbernstone]

Shebang is a hint- the app calling the script does not necessarily respect that. Did you try installing through apt? sudo apt install python-serial

Resolved.

[Kyungje-cho]

how to solved this problem ??

[hary66]

It would have been nice to tell us how you solved this issue !

[wrmthorne]

For anyone else coming here, I tried everything in this thread which didn't work for me but the command above (instead for python3) fixed it:

sudo apt install python3-serial

Worked for me on Ubuntu 20.0.4