pip install specific version

1# To install a specific version of a package using pip:
2pip install Package_name==version
3
4# Example:
5pip install MySQL_python==1.2.2

1# At the time of writing this numpy is in version 1.19.x
2# This statement below will install numpy version 1.18.1
3python -m pip install numpy==1.18.1

1py -3.7 -m pip install opencv-python
2