Flask first words

A virtual environment

1.virtualenv: Virtual Environment

Commonly used commands: 
install a virtual environment: pip install virtualenv 
create a virtual environment: virtualenv venv 
start the virtual environment: Source Venv / bin / of an activate 
exit the virtual environment: deactivate

2.virtualenvwrapper: virtual environment manager
specifies the virtual environment installation directory:
Create a system environment variable
variable names: WORKON_HOME
variable value: F: \ Envs

Commonly used commands: 
install a virtual environment manager: PIP install virtualenvwrapper - win 
to create a virtual environment: mkvirtualenv venv 
start the virtual environment: workon venv 
exit the virtual environment: deactivate 
delete virtual environment: rmvirtualenv venv 
lists all the virtual environment: lsvirtualenv 
go to the directory where the virtual environment: cdvirtualenv

Second, the installation Flask

pip install flask