Programming Forums > Script Programming > Python

JD-Salinger · Jun 22nd, 2008, 11:12 AM

Ive been studying python for 3 days right now and upon finishing the section about classes, Ive noticed that they don't have support for private variables, but they provide support for private methods, why is that? am i right? like this

 python Syntax (Toggle Plain Text) 
class Rectangle(object):
	def __init__(self):
		self.width=0
		self.height=0
	def setSize(self,size):
		self.width,self.height=size
	def getSize(self):
		return self.widht,self.height
	size = property(getSize,setSize)
class Rectangle(object):
	def __init__(self):
		self.width=0
		self.height=0
	def setSize(self,size):
		self.width,self.height=size
	def getSize(self):
		return self.widht,self.height
	size = property(getSize,setSize)

you can access some of the variables like this:

 python Syntax (Toggle Plain Text) 
    f=Rectangle()
    f.width=10
    f.height=23
    f=Rectangle()
    f.width=10
    f.height=23

Ive programmed in c++, and im not a guru, but im a bit puzzled cause how can python support data hiding? what's the main difference of a c++ class in regards to python class with respect to data hiding? perhaps i haven't read the other part of the book that would clear this up but can you help me please... Thanks a bunch

titaniumdecoy · Jun 22nd, 2008, 8:25 PM

Python supports pseudo-private variables which are prefixed by two underscores: __width, for example.

JD-Salinger · Jun 22nd, 2008, 9:03 PM

thank you so much.... its clear to me now....

Jun 22nd, 2008, 11:12 AM	#1
JD-Salinger Unknown Join Date: Apr 2008 Location: unknown Posts: 87 Rep Power: 1	Does python have private variables in classes? Ive been studying python for 3 days right now and upon finishing the section about classes, Ive noticed that they don't have support for private variables, but they provide support for private methods, why is that? am i right? like this python Syntax (Toggle Plain Text) class Rectangle(object): def __init__(self): self.width=0 self.height=0 def setSize(self,size): self.width,self.height=size def getSize(self): return self.widht,self.height size = property(getSize,setSize) class Rectangle(object): def __init__(self): self.width=0 self.height=0 def setSize(self,size): self.width,self.height=size def getSize(self): return self.widht,self.height size = property(getSize,setSize) you can access some of the variables like this: python Syntax (Toggle Plain Text) f=Rectangle() f.width=10 f.height=23 f=Rectangle() f.width=10 f.height=23 Ive programmed in c++, and im not a guru, but im a bit puzzled cause how can python support data hiding? what's the main difference of a c++ class in regards to python class with respect to data hiding? perhaps i haven't read the other part of the book that would clear this up but can you help me please... Thanks a bunch __________________ ------------------------------------------------------------------------- I thought what I'd Do was, I'd pretend to be one of those deaf mutes ------------------------------------------------------------------------

Jun 22nd, 2008, 8:25 PM	#2
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 934 Rep Power: 4	Re: Does python have private variables in classes? Python supports pseudo-private variables which are prefixed by two underscores: __width, for example.

Jun 22nd, 2008, 9:03 PM	#3
JD-Salinger Unknown Join Date: Apr 2008 Location: unknown Posts: 87 Rep Power: 1	Re: Does python have private variables in classes? thank you so much.... its clear to me now.... __________________ ------------------------------------------------------------------------- I thought what I'd Do was, I'd pretend to be one of those deaf mutes ------------------------------------------------------------------------

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Programming Forums > Script Programming > Python

Does python have private variables in classes?