On Wednesday, January 4, 2017 at 4:28:28 PM UTC-5, backseat wrote: > > My PEP8 checker tells me that: > > db.table.field == None > > should be > > db.table.field is None >
When creating expressions with DAL Field objects, we don't want to generate boolean values but instead need to generate Query objects. This is achieved via *overloading *of Python's logical operators (i.e., ==, !=, <, >, etc.). It is not possible to override Python's identity operators (i.e., is and is not), so we must use == and != instead. This also makes all logical comparisons consistent, using just the logical operators rather than a mix of logical operators and identity operators. Anthony -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
