Dale Amon schrieb:
There are a number of things which I have been used
to doing in other OO languages which I have not yet
figured out how to do in Python, the most important
of which is passing method names as args and inserting
them into method calls. Here are two cases I have been
trying to figure out for a current project.
The first is passing methods to dispatcher methods. In
pseudocode, something like this:
def dispatcher(self,methodname):
self.obj1.methodname()
self.obj2.methodname()
I'd say you can use:
method = getattr(self.obj1, 'methodname')
method()
It will raise AttributeError if 'methodname' is not found or the
(optional) third argument to getattr()
and another case is selecting behavior of an object by
setting a type string, with pseudo code like this:
self.IBM029 = re.compile([^acharset]
self.IBM026 = re.compile([^anothercharset]
self.type = "IBM029"
errs = self.(self.type).findall(aCardImage)
same here, or use a class/module-level dict like
symbol_table = {
'IBM029': re.compile([^...]),
'IBM026': re.compile([^...])
}
and symbol_table[self.type].findall(something)
cheers
Paul
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