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Accessing Object Attributes Using String Names
In Python, accessing attributes of an object is typically done using the dot operator. However, it may be necessary to access attributes using a string corresponding to the attribute name. This can be achieved using the built-in functions getattr and setattr.
To retrieve the value of an attribute given its string name, use getattr. For example:
class Test: def __init__(self): self.attr1 = 1 self.attr2 = 2 t = Test() x = "attr1" x_value = getattr(t, x)
To set the value of an attribute using its string name, use setattr. For example:
setattr(t, 'attr1', 21)
Note that this technique can also be used to call methods from string names by accessing the method and then calling it normally.
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