Python virtual environment is not activating

I am trying to install django. For that I have installed Virtual environment by using

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python -m venv env. And environment installed successfully, but it is not activating when I used the shell command

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source env/bin/activate. The name of the current virtual environment is NOT appear on the left of the prompt. So I understand virtual environment is not active. I am still unsuccessful. My commands in terminal given below.

user@libserver.libsoft.in /$ python3.8 -V
Python 3.8.0

user@libserver.libsoft.in /$ which python3.8
/usr/local/bin/python3.8

#I created my_env in /home/LPython/
user@libserver.libsoft.in /$ python3.8 -m venv /home/LPython/my_env

user@libserver.libsoft.in /$ cd /home/LPython/my_env

user@libserver.libsoft.in /home/LPython/my_env$ source bin/activate
user@libserver.libsoft.in /home/LPython/my_env$ 

This problem is solved. Actually I was not using BASH shell , even if the echo $SHELL outputs bin/bash . Because of this output, I thought i was using using BASH shell. Then I login through SSH . If you are using Windows must login through PUTTY . Then I could activate my virtual environment through source my_env/bin/activate.