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Today, I will talk to you about how to write the code when importing import and from into python grammar. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.

Import cgi import datetime import wsgiref.handlers from google.appengine.ext import db from google.appengine.api import users from google.appengine.ext import webapp

Creating a module is equivalent to a data table and a class

Class Greeting (db.Model): author = db.UserProperty () content = db.StringProperty (multiline=True) date = db.DateTimeProperty (auto_now_add=True)

MainPage is also a class. Parameters seem to mean inheritance.

Class MainPage (webapp.RequestHandler): def get (self): self.response.out.write ('') greetings = db.GqlQuery ("SELECT *"FROM Greeting"ORDER BY date DESC LIMIT 10") for greeting in greetings: if greeting.author: self.response.out.write (% s wrote:'% greeting.author.nickname ()) else: self.response.out.write self.response.out.write ('% s'% cgi.escape (greeting.content))

Code self.response.out.write (""

Class MainPage (webapp.RequestHandler):

Def get (self):

Self.response.out.write ('')

Greetings = db.GqlQuery ("SELECT *"

"FROM Greeting"

"ORDER BY date DESC LIMIT 10")

For greeting in greetings:

If greeting.author:

Self.response.out.write ('% s wrote:'% greeting.

Author.nickname ()

Else:

Self.response.out.write

Self.response.out.write ('

% s

'%

Cgi.escape (greeting.content))

The method of using double quotation marks in double quotation marks action is set to url

"") # class Guestbook (webapp.RequestHandler): def post (self): greeting = Greeting () after reading the above, do you have any further understanding of how to write the code when importing import and from into python grammar? if you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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