Topic: In the Python species, the static method of the class is summary.
Method 1: Use __call__eg: import osclass command: class _staticcommand: def __call __ (self): Os.System (Command)
Run = _STATICCOMMAND ()
IF __NAME__ == '__main__': command.run ("Dir / W") #windows command.run ("ls -l") #unix Linux
Realization: Define an internal class (_StaticCommand), an outer class (Command) has a class attribute RUN pointing _StaticCommand instance, the key is the special way to define _StaticCommand __call__, this method is used as _StaticCommand instance use () time Tune, (such as: _StaticCommand () ()), as an instance is a method
Method 2: STATICMETHOD IMPORT OSCLASS COMMAND: DEF RUN (Command): os.system (Command): os.system
Run = staticMethod (RUN) #staticMethod accepts the constructor function reference, at which time RUN becomes the StaticMethod class instance
IF __NAME__ == '__main__': command.run ("Dir / W") #windows command.run ("ls -l") #unix Linux
