Trying to connect firebase to my project but installing error in pyrebase and import pyrebase error

I am trying to use python firebase.google.com and connecting my project to my python file I have installed pyrebase4 according to docs I am done everything

I have faced many problems like

while importing pyrebase in a python file I got error like

secondly When trying to install pyrebase I am getting error like

Installation error with pycryptodome
(and a lots of line with after this )

someone from github provide instruction

pip install pyrebase4
pip install pyrebase-t
pip install pycryptodome

but pycryptodome also successfully installed but Getting error in

pip install pyrebase-t

with error something like

Attempting uninstall: requests
    Found existing installation: requests 2.11.1
    Uninstalling requests-2.11.1:
      Successfully uninstalled requests-2.11.1
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. 
This behaviour is the source of the following dependency conflicts.
pyrebase4 4.4.3 requires oauth2client>=4.1.2, but you have oauth2client 3.0.0 which is incompatible.       
pyrebase-t 1.0.28 requires requests==2.11.1, but you have requests 2.25.1 which is incompatible.
Successfully installed requests-2.25.1

first uninstall pyrebase, pyrebase4, pyrebase-t or pycryptodome by running this command

pip uninstall pyrebase, pyrebase4, pyrebase-t, pycryptodome

then reinstall pycryptodome by running the following command

pip install pycryptodome

after that install pyrebase4 by running the command below

pip install pyrebase4

hope this will solve the problem as it solved mine.