inheritance and how to use it
davea at davea.name
Fri Feb 15 18:11:01 CET 2013
On 02/15/2013 11:59 AM, Bob Brusa wrote:
> I use a module downloaded from the net. Now I want to build my own class, based
> on the class SerialInstrument offered in this module - and in my class I would
> like to initialize a few things, using e. g. the method clear() offered by
> SerialInstrument. Hence I type:
> class myClass(SerialInstrument)
> def f1(self, str1, str2)
> ...do something etc.
> I then get the message "self not know" from the statement self.clear(self). I
> have tried many other notations - none worked. What works is however the
> following code - specifying myClass without the self.clear(self) in it:
> x = myClass("argument")
> How can I integrate this call into the definition of myClass? Thanks for advice.
By initialize, I'll assume you want this code to execute when your class
is instantiated. The way to do that is with a method called __init__().
Notice the double underscore at begin and end.
self.val1 = 42
self.val2 = 31
#... also initialize the base class
def f1(self, str1, str2):
You should also call the __init__() method of the base class. But I
don't know whether you're using Python2 or Python3, so I won't write
This is without knowing anything about your base class, so there may be
many other adjustments to be made.
More information about the Python-list