where are the "class variables"?

[Dominik Kaspar]

i'm used to java and its strict way of defining variables. so how is
it possible to reach something like a class variable in python?
with the following code i didn't have much succes...

class Server(threading.Thread):
running = 0 (??)

def run(self):
running = 1
while running:
print "do something here..."

def exit(self):
running = 0

thanks
-- dominik

 

[Bob Gailer]

i'm used to java and its strict way of defining variables. so how is
it possible to reach something like a class variable in python?
with the following code i didn't have much succes...

class Server(threading.Thread):
running = 0 (??)

def run(self):
running = 1
while running:
print "do something here..."
def exit(self):
running = 0

prefix running with the class name:
Server.running =1
while Server.running:
...
Server.running = 0

Bob Gailer
(e-mail address removed)
303 442 2625

 

[Gerrit Holl]

i'm used to java and its strict way of defining variables. so how is
it possible to reach something like a class variable in python?
with the following code i didn't have much succes...

class Server(threading.Thread):
running = 0 (??)

def run(self):
running = 1
while running:
print "do something here..."

def exit(self):
running = 0

This is where self is for: self.running refers to the class
variable 'running'.

Gerrit.

 

[John Roth]

i'm used to java and its strict way of defining variables. so how is
it possible to reach something like a class variable in python?
with the following code i didn't have much succes...

class Server(threading.Thread):
running = 0 (??)

This is correct - it binds 0 to the identifier running in the class.

def run(self):
running = 1

use Server.running

while running:

use while Server.running:

print "do something here..."

def exit(self):
running = 0

use Server.running

thanks
-- dominik

If you want to put an identifier in the class, reference the
class directly, or inherit from object and use a class method.

John Roth

 

[Tim Rowe]

i'm used to java and its strict way of defining variables. so how is
it possible to reach something like a class variable in python?
with the following code i didn't have much succes...

class Server(threading.Thread):
running = 0 (??)

def run(self):
running = 1
while running:
print "do something here..."

def exit(self):
running = 0

thanks
-- dominik

Try:

class Server(threading.Thread):
running = 0
def run(self):
Server.running = 1
while Server.running:
print "Hello!"
self.exit()
def exit(self):
Server.running = 0

If you want class /functions/, though, you need a recent version of
Python.

 

[Bruno Desthuilliers]

This is where self is for: self.running refers to the class
variable 'running'.

Gerrit, I'm afraid you answsered too fast. here, 'self.running' will
refer to (and eventually create) an *instance* variable 'running'. If
the OP want a *class* variable, he needs 'Server.running'.

(Now does the OP really want a class variable or did he meant an
instance variable is another question...)

Bruno

 

[Tom Hanks]

Access class members... as members of the class!

class Server(threading.Thread):
running = 0

def run(self):
Server.running = 1 # note added "Server."
while Server.running: # ditto, added "Server."
print "do something here..."

def exit(self):
Server.running = 0 # ditto, added "Server."

TTFN,
Tom.

 

[Gerrit Holl]

This is where self is for: self.running refers to the class
variable 'running'.

Sorry, this should be:
self.__class__.running

Gerrit.