On 12/4/2009 1:59 AM, cmckenzie wrote:
Sigh, I'm using Google Groups and it seems I can't see my original
post and everyone's replies. I'm really keen to reply back, so I'll
just re-post my follow up for now and make sure I don't make a habit
of this. (I'll get a news reader) Here goes:
I agree, I'm C# and Java influenced, but I've got some messy Perl
experience too.
It was late when I posted my example, so I don't think I made my
question clear enough. I want to be able to construct a class level
class variable, so its global to the class,
"global to the class" that's contradictory!
then reference it from a
class method.
I wrote a web server that uses reflection to dynamically
load modules which are mapped to url paths. e.g. module "search.py"
maps to "search.html",
Be careful of someone requesting an ../insecure.html
etc... It all works great, but I want my
modules to be able to __init__ classes that belong to the module, then
when a request comes in and is passed to the module, I can reference
that initialized class.
When a module is "import"-ed, it's body is executed, unless you put it
inside a if __name__ == '__main__': block which is only executed when
the module itself is executed (instead of being imported). Basically,
the module's body is like the module's __init__()
That way if your directory is like this:
/data
- /__init__.py
- /one.py
/run_server.py
your one.py would contains something like:
class MyClass(object):
...
instance = MyClass()
and your run_server.py would reference the already instantiated module
in the class as such:
from data.one import instance
# serve something using the instance
The declaration of a class level nestedClass class variable is wrong,
but I was hoping someone could just say, "dummy, this is how to
declare a class variable when you can't construct it just yet",
or
"you have to construct an empty version of nestedClass at the class
level, then just re-construct it with any parameters during __init__".
That sounds like C/C++ forward declaration. Not something you'd need in
a language that has dynamic name resolution.
class module:
nestedClass
def __init__():
self.nestedClass = nested(10)
print self.nestedClass.nestedVar
def getNestedVar(self):
return self.nestedClass.nestedVar
class nested():
nestedVar = 1
def __init__(self, value):
nestedVar = value
print "Initialized..."
Thanks and sorry for double posting, it won't happen again.
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