Have you thought about using better data structures? Like dictionaries i.e.
class Board[object]:
def __init__[self]:
self.dict = {"one":"1", "two":"2", "three":"3"}
And then you could do something like:
>>> a = Board[]
>>> a.dict
{'three': '3', 'two': '2', 'one': '1'}
>>> for element in a.dict:
a.dict[element] = element+"x"
>>> a.dict
{'three': 'threex', 'two': 'twox', 'one': 'onex'}
>>> a.dict["one"] = "1"
>>> a.dict
{'three': 'threex', 'two': 'twox', 'one': '1'}
The solution you're looking for is also possible [most likely with some very very weird getattrs etc... and I wouldn't really recommend it.
Edit1 It turns out [after checking] that your class attributes will be stored in a object.__dict__ anyhow. SO why not use your own.
Just also to clarify it is possible
emulating container objects with your own class by defining __getitem__ and __setitem__ methods like bellow:
class Board[object]:
def __init__[self]:
self.dict = {"one":"1", "two":"2", "three":"3"}
def __getitem__[self,key]:
return self.dict[key]
def __setitem__[self, key, value]:
self.dict[key] = value
Which means you don't have to keep writing a.dict everywhere and can pretend your class is the container [dict] like bellow:
>>> a = Board[]
>>> a.dict
{'three': '3', 'two': '2', 'one': '1'}
>>> a["one"]
'1'
>>> a["one"] = "x"
>>> a.dict
{'three': '3', 'two': '2', 'one': 'x'}
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In the previous fact, we have seen that Python doesn’t have the static keyword. All variables that are assigned a value in the class declaration are class variables.
We should be careful when changing the value of a class variable. If we try to change a class variable using an object, a new instance [or non-static] variable for that particular object is created and this variable shadows the class variables. Below is a Python program to demonstrate the same.
Python3
class CSStudent:
stream = 'cse'
def __init__[self, name, roll]:
self.name = name
self.roll = roll
a = CSStudent["Geek", 1]
b = CSStudent["Nerd", 2]
print ["Initially"]
print ["a.stream =", a.stream ]
print
["b.stream =", b.stream ]
a.stream = "ece"
print ["\nAfter changing a.stream"]
print ["a.stream =", a.stream ]
print ["b.stream =", b.stream ]
Output:
Initially a.stream = cse b.stream = cse After changing a.stream a.stream = ece b.stream = cse
We should change class variables using class names only.
Python3
class CSStudent:
stream = 'cse'
def __init__[self, name, roll]:
self.name = name
self.roll = roll
a = CSStudent["check", 3]
print "a.stream =", a.stream
CSStudent.stream = "mec"
print "\nClass variable changes to mec"
b = CSStudent["carter", 4]
print "\nValue of variable steam for each object"
print "a.stream =", a.stream
print "b.stream =", b.stream
Output:
a.stream = cse Class variable changes to mec Value of variable steam for each object a.stream = mec b.stream = mec
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