I have a class
class MyClass(object):
ClassTag = '!' + 'MyClass'
Instead of explicitly assigning 'MyClass' I would like to use some construct to get the class name. If I were inside a class function, I would do something like
@classfunction
def Foo(cls):
tag = '!' + cls.__class__.__name__
but here I am in class scope but not inside any function scope. What would be the correct way to address this?
Thank you very much
Instead of explicitly assigning 'MyClass' I would like to use some construct to get the class name.
You can use a class decorator combined with the __name__ attribute of class objects to accomplish this:
def add_tag(cls):
cls.ClassTag = cls.__name__
return cls
@add_tag
class Foo(object):
pass
print(Foo.ClassTag) # Foo
In addition to the above, here are some side notes:
As can be seen from the above example, classes are defined using the
class keyword, not the def keyword. The def keyword is for
defining functions. I recommend walking through the tutorial
provided by Python,
to get a grasp of Python basics.
If you're not working on legacy code, or code that requires a Python 2 library, I highly recommend upgrading to Python 3. Along with the fact that the Python Foundation will stop supporting Python in 2020, Python 3 also fixes many quirks that Python 2 had, as well as provides new, useful features. If you're looking for more info on how to transition from Python 2 to 3, a good place to start would be here.
A simple way is to write a decorator:
def add_tag(cls):
cls.ClassTag = cls.__name__
return cls
# test
@add_tag
class MyClass(object):
pass
print(MyClass.ClassTag)
definstead ofclass-- now fixed.