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Why doesn't this work? (creating objects from a list)

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Join Date: Feb 2009

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mahela007

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Why doesn't this work? (creating objects from a list)

Sep 6th, 2009

hi guys.
can anyone tell me why this code doesn't work? It doesn't raise any error but neither does it provide the expected results.

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my_list= ['a','b']
 
class my_class:
     def __init__ (self):
         self.name = ' my name is hi'
 
for a in my_list;
    a = my_class()
my_list= ['a','b']

class my_class:
     def __init__ (self):
         self.name = ' my name is hi'

for a in my_list;
    a = my_class()

a.name() gives and error.

What do you mean I'm lazy? can't you see I'm trying so hard to do nothing?

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scru

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Re: Why doesn't this work? (creating objects from a list)

Sep 6th, 2009

Look, not to be harsh or anything, but given you previous posts I think you would be better off reading a book or a wiki or even just a tutorial on Python OOP and maybe Python in general. Really.

Last edited by scru; Sep 6th, 2009 at 3:33 pm.

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mahela007

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Re: Why doesn't this work? (creating objects from a list)

Sep 7th, 2009

I'm not trying to be a fully fledged programmer. I'm a hobbyist. So I don't want to buy any books on python. I have however, read a few tutorials on python
(a byte of python, how to think like a computer scientist, parts of the python documentation)... so why doesn't it (the code above) work?

Last edited by mahela007; Sep 7th, 2009 at 5:56 am.

What do you mean I'm lazy? can't you see I'm trying so hard to do nothing?

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snippsat

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Re: Why doesn't this work? (creating objects from a list)

Sep 7th, 2009

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so why doesn't it (the code above) work?

Why shoud it?
Break it thing down to understand what happends.

 Help with Code Tags 
 python Syntax (Toggle Plain Text) 
>>> class my_class:
	def __init__ (self):
		self.name = ' my name is hi'
 
>>> a = my_class()  #Class instance
>>> print a
<__main__.my_class instance at 0x011E23F0>
>>> 
# This only show the class instance and memory location.
# So you see now that your code can not work.
 
>>> a.name  #call __init__(constructor)
' my name is hi'
 
>>> my_list= ['a','b']
>>> for x in my_list:
	print a.name, x	
 my name is hi a
 my name is hi b
 
This dosent make must sense.
 
Just one way that give a little more sense.
----------------
my_list= ['a','b']
 
class my_class:    
    def __init__ (self, name):
        self.name = name       
 
a = my_class('Tom')
 
for x in my_list:
    print 'Hi %s my name is %s' % (a.name, x)
 
output-->
Hi Tom my name is a
Hi Tom my name is b
----------------
>>> class my_class:
	def __init__ (self):
		self.name = ' my name is hi'
		
>>> a = my_class()  #Class instance
>>> print a
<__main__.my_class instance at 0x011E23F0>
>>> 
# This only show the class instance and memory location.
# So you see now that your code can not work.

>>> a.name  #call __init__(constructor)
' my name is hi'

>>> my_list= ['a','b']
>>> for x in my_list:
	print a.name, x	
 my name is hi a
 my name is hi b

This dosent make must sense.

Just one way that give a little more sense.
----------------
my_list= ['a','b']

class my_class:    
    def __init__ (self, name):
        self.name = name       

a = my_class('Tom')

for x in my_list:
    print 'Hi %s my name is %s' % (a.name, x)

output-->
Hi Tom my name is a
Hi Tom my name is b
----------------