<s> from datetime import datetime <EOL> import re <EOL> from flask import Flask , request , flash , url_for , redirect , render_template <EOL> from flask_sqlalchemy import SQLAlchemy <EOL> app = Flask ( __name__ ) <EOL> app . config . from_pyfile ( '<STR_LIT>' ) <EOL> db = SQLAlchemy ( app ) <EOL> class Comments ( db . Model ) : <EOL> __tablename__ = '<STR_LIT>' <EOL> id = db . Column ( '<STR_LIT>' , db . Integer , primary_key = True ) <EOL> name = db . Column ( db . String ( <NUM_LIT:100> ) ) <EOL> email = db . Column ( db . String ( <NUM_LIT:100> ) ) <EOL> comment = db . Column ( db . String ( <NUM_LIT:200> ) ) <EOL> pub_date = db . Column ( db . DateTime ) <EOL> def __init__ ( self , name , email , comment ) : <EOL> self . name = name <EOL> self . email = email <EOL> self . comment = comment <EOL> self . pub_date = datetime . now ( ) <EOL> def is_email_address_valid ( email ) : <EOL> """<STR_LIT>""" <EOL> if not re . match ( "<STR_LIT>" , email ) : <EOL> return False <EOL> return True <EOL> @ app . route ( '<STR_LIT:/>' ) <EOL> def show_all ( ) : <EOL> return render_template ( '<STR_LIT>' , comments = Comments . query . order_by ( Comments . pub_date . desc ( ) ) . all ( ) ) <EOL> @ app . route ( '<STR_LIT>' ) <EOL> def create ( ) : <EOL> return redirect ( url_for ( '<STR_LIT>' ) ) <EOL> @ app . route ( '<STR_LIT>' ) <EOL> def drop ( ) : <EOL> return redirect ( url_for ( "<STR_LIT>" ) ) <EOL> @ app . route ( '<STR_LIT>' , methods = [ '<STR_LIT:GET>' , '<STR_LIT:POST>' ] ) <EOL> def new ( ) : <EOL> if request . method == '<STR_LIT:POST>' : <EOL> if not request . form [ '<STR_LIT:name>' ] or not request . form [ '<STR_LIT:email>' ] or not request . form [ '<STR_LIT>' ] : <EOL> flash ( '<STR_LIT>' , '<STR_LIT:error>' ) <EOL> elif not is_email_address_valid ( request . form [ '<STR_LIT:email>' ] ) : <EOL> flash ( '<STR_LIT>' , '<STR_LIT:error>' ) <EOL> else : <EOL> comment = Comments ( request . form [ '<STR_LIT:name>' ] , <EOL> request . form [ '<STR_LIT:email>' ] , <EOL> request . form [ '<STR_LIT>' ] ) <EOL> db . session . add ( comment ) <EOL> db . session . commit ( ) <EOL> flash ( '<STR_LIT>' ) <EOL> return redirect ( url_for ( '<STR_LIT>' ) ) <EOL> return render_template ( '<STR_LIT>' ) <EOL> if __name__ == '<STR_LIT:__main__>' : <EOL> app . run ( host = "<STR_LIT>" ) </s>
