<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>Hello I have found a workaround for the problem, like this: def findByAge(age): fnc = "lambda p: p.age == {0}".format(age) fn = eval(fnc) doFindPersons(fn) But, I'd still like to know if it's possible to use lambdas directly, instead of using eval. Thanks, Tom <div abp="124"><hr id="stopSpelling" abp="125">From: ttustonic@outlook.com To: ponyorm-list@ponyorm.org Date: Sun, 3 Aug 2014 00:54:35 +0200 Subject: [PonyORM-list] Using lambda in Query filter <style abp="131"></style> <div dir="ltr" abp="132">Hello I'm having a problem using passing lambda expressions as a parameter in Query filter method.In the following example call to 'findByAge0' works fine, but calling 'findByAge' raises an exception:pony.orm.core.ExprEvalError: age raises NameError: name 'age' is not defined db = Database('sqlite', ':memory:') class Person(db.Entity): name = Required(unicode) age = Required(int) db.generate_mapping(create_tables=True) with db_session: p1 = Person(name="Bing Bang", age=31) p2 = Person(name="Kick Mick", age=75) def findByAge0(age): fn = lambda p: p.age == age q = select(p for p in Person) q = q.filter(fn) with db_session: persons = list(q) for p in persons: print p.name def findByAge(age): fn = lambda p: p.age == age doFindPersons(fn) def doFindPersons(fn): q = select(p for p in Person) q = q.filter(fn) with db_session: persons = list(q) for p in persons: print p.name findByAge0(75) findByAge(75) a = raw_input('[Enter]') Am I doing something wrong or it's not possible to use lambda expression as in this example?Thanks in advance,Tom </div> _______________________________________________ ponyorm-list mailing list ponyorm-list@ponyorm.org /ponyorm-list</div> </div></body> </html>