LeoShi questions

• How to understand this Promise execution order?
• Why same integer value have different memory address in Java? [duplicate]
• why wildcard doesn't work in `sudo rm` statement?
• What's the difference between getattr(self, '__a') and self.__a in python?
• Why 'self' method of module cannot become a singleton method of class?
• Why python mock patch doesn't work?

LeoShi answers