C:\python>mkdir pdf C:\python>cd pdf C:\python\pdf>python -m venv env C:\python\pdf>env\Scripts\activate (env) C:\python\pdf> (env) C:\python\pdf>python -m pip install --upgrade pip (env) C:\python\pdf>mkdir src (env) C:\python\pdf>cd src (env) C:\python\pdf\src>python --version Python 3.7.7 (env) C:\python\pdf\src>pip install pdfminer.six