Answers for "pip install syntax"

pip install from requirements.txt

$ pip install -r requirements.txt

python install pip

python -m pip install --upgrade pip

install requirements.txt in pip command

note: yor should be on the same dir as requirements.txt file 

pip install -r requirements.txt

pip install python

"""to install a python module just use pip command"""
"""open cmd as administrator and write this command"""
pip install <package-name>
"""for ex. pip install pandas"""
##before writing command first change environment variable to your pip file location