python repr适用于开发人员，print适用于软件用户

Posted 2021-05-09

# coding=UTF-8

class Engineer(object):

    def __init__(self, name, specialty):
        self.name = name
        self.specialty = specialty

    def __repr__(self):
        # __repr__ is for developers
        # repr()
        # evaluated in REPL
        return "Engineer({self.name}, {self.specialty})".format(self=self)

    def __str__(self):
        # __str__ is for endusers
        # str()
        # print()
        return "Engineer, name: {self.name}, specialty: {self.specialty}".format(self=self)

engineer = Engineer("ChenDi", "BackEnd");
print(engineer);