| # Write Python code here class sampleclass: count = 0 # class attribute def increase ( self ): sampleclass.count + = 1
# IN Calling increment () for object s1 = sampleclass () s1.increase () print s1.count
# The call will increase by one more
# object s2 = sampleclass () s2.increase () print s2.count print sampleclass.count |
Output:
1 2 2
Instance Attributes
Unlike class attributes, instance attributes are not I am common to objects. Each object has its own copy of an instance attribute (in the case of class attributes, all objects refer to one copy).
To list the attributes of an instance / object, we have two functions:
1.vars () — this function displays an instance attribute as a dictionary.
2.dir () — this function displays more attributes than the vars function because it is not instance limited. It also renders class attributes.
| # Python program to demonstrate
# instance attributes class emp: def __ init __ ( self ): self .name = ’ xyz’ self . salary = 4000 def show ( self ): print self . name print self . salary e1 = emp () print "Dictionary form:" , vars ( e1) print dir (e1) |
Output:
Dictionary form: {’salary’: 4000,’ name’: ’xyz’} [’ __doc__’, ’__init__’,’ __module__’, ’name’,’ salary’, ’ show’] This article courtesy of Severe Valech ... If you are as Python.Engineering and would like to contribute, you can also write an article using contribute.python.engineering or by posting an article contribute @ python.engineering. See my article appearing on the Python.Engineering homepage and help other geeks.
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