CODEWITHSUNDEEP
pythonmultiple-instances
Unaipg
Unaipg

Reputation: 175

Multiple instances of a class with different content

I'm trying to make a list of objects with different content but when I create the instance, it edits all other instances.

class Example(object):
    name = ''

   @classmethod
   def __init__(cls, name):
       cls.name = name

col = []
col.append(Example('text1'))
col.append(Example('text2'))
for item in col:
    print item.name

And it prints

'text2'
'text2'

When I expect it to print

'text1'
'text2'

I've also tried with 

var = Example('text1')
col.append(var)

And I can't set different variable names because I want it to create instances in a loop.

Upvotes: 1

Views: 235

Answers (2)

Martijn Pieters
Martijn Pieters

Reputation: 1121416

Don't make __init__ a class method; it a instance initializer:

class Example(object):
    name = ''

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

By making it a class method, you made it alter the class, not the new instance created.

Without the @classmethod decorator, the class-level name attribute is entirely optional, you can remove it for most uses.

Upvotes: 4

John Zwinck
John Zwinck

Reputation: 249123

You want this:

class Example(object):
   def __init__(self, name):
       self.name = name

Upvotes: 0

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