Problem with importing camelcase module to Python (VSCode terminal)

I am trying to import camelcase module to python:

from camelcase import CamelCase
txt = 'hello there world'
c = CamelCase()
print(c.hump(txt))

I get an error: ModuleNotFoundError: No module named 'camelcase'

I tried also:

import camelcase
txt = 'hello there world'
c = camelcase.CamelCase()
print(c.hump(txt))

Same issue. I have newest version of pip installed:

--pip --version
pip 20.0.2 from C:\Users\Eryk Słowiński\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\pip (python 3.7)

And for sure I have installed camelcase

--pip freeze
appdirs==1.4.3
camelcase==0.2
importlib-metadata==1.5.0
virtualenv==20.0.3
zipp==2.2.0

What am I doing wrong?