Lack of serial library with python3 on Linux image V2.6

Dear Sir,

I`m trying to use python3 with pyserial library on apalis T30 with linux Apalis_T30_LinuxImageV2.6_20160331 installed. I have installed python3 with commands:

opkg install python3
opkg install python3-modules

Because python3-pip is also unavailable I was also trying to install pyserial manually using commands:

wget https://bootstrap.pypa.io/get-pip.py
python get-pip.py

and got error as bellow

Traceback (most recent call last):
  File "get-pip.py", line 24, in <module>
    import pkgutil
  File "/usr/lib/python3.4/pkgutil.py", line 3, in <module>
    from functools import singledispatch as simplegeneric
  File "/usr/lib/python3.4/functools.py", line 21, in <module>
    from collections import namedtuple
  File "/usr/lib/python3.4/collections/__init__.py", line 11, in <module>
    from operator import itemgetter as _itemgetter, eq as _eq
ImportError: No module named 'operator'

What is the best way to include pyserial library into python3 under Apalis_T30_LinuxImageV2.6_20160331?

Best regards,
Kamil

The recommended way would be to setup OpenEmbedded and then add python3-pip and python3-pyserial to the image.