The Metaclass in Python

Most encounter a problem.

Class Meta (type):    passclass M1 (meta):    passclass M2 (metaclass=m1):    passclass Test (M2,metaclass=meta):    passprint (Type (Test)) # <class ' __main__. M1 ' ># explained not to find their own metaclass, but to use the father's Metaclass

　　

Class Meta (type):    passclass M1 (Meta):    passclass M2 (metaclass=m1):    passclass M3 (metaclass=meta)    : Passclass Test (M2,m3,metaclass=meta):    Pass    print (type test) # <class ' __main__. M1 ' ># Two fathers have Metaclass, M2 's Metaclass is a subclass of M3metaclass # with subclasses without parent class

　　

Class Meta (type):    passclass M1 (Meta):    passclass M4 (M1):    passclass M2 (METACLASS=M4):    passclass M3 ( Metaclass=meta):    passclass Test (M2, M3, metaclass=m4):    passprint (Type test)  # <class ' __main__. M4 ' >

　　

The Metaclass in Python