Chaz Ginger wrote: > glenn wrote: >>> Shouldn't that be >>> >>> beagle = animal.dog() >>> >>> to create an instance? >>> >>> We've all done it ... >> lol - actually Im confused about this - there seem to be cases where >> instantiaing with: >> instance=module.classname() >> gives me an error, but >> instance=module.classname >> doesnt - so I got into that habit, except for where I had a constructor >> with parameters - except now Im feeling foolish because I cant >> replicate the error - which suggests I didnt understand the error >> message properly in the first place... arrgh >> I guess thats just part of the process of gaining a new language. >> >> glenn >> > > module.classname and module.classname() are two different things. If you > use module.classname() you invoke the __new__ and __init__ methods in > the class, and you might get an error from them. > > On the other hand module.classname will always work, assuming classname > really exists in module. What you get back is a sort of reference to the > class itself and not an instance of it.
It is not a sort of reference to the class, it is *the class itself*. >>> class A: ... pass ... >>> A <class __main__.A at 0xdeadbeef> >>> Georg -- http://mail.python.org/mailman/listinfo/python-list
