py -m pip install # sit module in cmd
import os,sys
sys.path.append(os.getcwd())
#for python3
python3 -m pip install MODULE_NAME
pip install 'modulename'
export PYTHONPATH="${PYTHONPATH}:/path/to/your/project/"
import sys
sys.path.append('..') #parent directory
sys.path.append('/home/model') # abs path
from folderA.folderB.fileA import functionA
pip install <module name>