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Pragmáticoéaquiloquecontemconsideraçõesdeordemprática,realista,comalvobemdefinido.Serpragmáticoéser

práticoéterobjetivosdefinidos!

classEntity(Base):__tablename__='entity'id=Column(Integer,Sequence('id_seq'),primary_key=True)name=Column(String(50))

def__init__(self,name):self.name=name

def__repr__(self):return"<Entity('%d','%s')>"%(self.id,self.name)

classUserForm(ModelForm):classMeta:model=User

classUserForm(Form):name=TextField(validators=[DataRequired(),Length(max=100)])email=TextField(validators=[DataRequired(),Length(max=255)])

<title>{%blocktitle%}{%endblock%}</title><ul>{%foruserinusers%}<li><ahref="{{user.url}}">{{user.username}}</a></li>{%endfor%}</ul>

revision='1975ea83b712'down_revision=None

fromalembicimportopimportsqlalchemyassa

defupgrade():pass

defdowngrade():pass

"""$alembicrevision-m"Addacolumn""""

revision='ae1027a6acf'down_revision='1975ea83b712'

fromalembicimportopimportsqlalchemyassa

defupgrade():op.add_column('account',sa.Column('last_transaction_date',sa.DateTime))

defdowngrade():op.drop_column('account','last_transaction_date')

defupgrade():op.create_table('account',sa.Column('id',sa.Integer,primary_key=True),sa.Column('name',sa.String(50),nullable=False),sa.Column('description',sa.Unicode(200)),)

defdowngrade():op.drop_table('account')

http://techblog.netflix.com/2013/03/python-at-netflix.html

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