Getting Started with Python Flask framework

Preface

　　Flask Django package is less than perfect features, performance is less than Tornado, but Flask third party open source components than rich.

　　If you are a lover of minimalist style perfectionist, then Flask for you.

app object initialization and configuration

flask application object initialization parameter description

App = the Flask ( __name__ , 
            static_url_path = " / Python " ,   # url prefix to access static resources, the default value is static 
            static_folder = " static " ,   # directory static files, the default is static 
            template_folder = " Templates " ,   # template file directory, the default is Templates 
            )

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 Using a configuration file

# Configuration parameters use 
# 1. profile 
# app.config.from_pyfile ( "the config.cfg") 

# 2. Configuration parameters using object 
class Config (Object): 
    the DEBUG = True 
    ITCAST = " Python " 


the app.config. from_object (config) 

# # 3. direct operating config dictionary objects 
# the app.config [ "the DEBUG"] = True

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 Read mode configuration parameters

 # Reads the configuration parameters 
    # 1. config values directly from the dictionary in the global object app 
    # Print (app.config.get ( "ITCAST")) 
    # 2. acquisition parameters of CURRENT_APP 
    Print (current_app.config.get ( " ITCAST " ))

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app is run instructions

IF  __name__ == ' __main__ ' :
     # Start program flask 
    # app.run () 
    app.run (Host = " 0.0.0.0 " , Port = 5000, Debug = True)

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Route view function

 

 

 

data