Detailed introduction to Python's built-in hasattr function

English document:

• hasattr(object, name)

• ##The arguments are an object and a string. The result is True if the string is the name of one of the object's attributes, False if not. (This is implemented by calling getattr(object, name) and seeing whether it raises an

  AttributeError or not.)

• 
  

• Instructions:

• 　1. The function is used to detect whether the object object contains a name named The attribute of name, if it exists, returns True, if not, returns False

#定义类A
>>> class Student:
    def __init__(self,name):
        self.name = name
        
>>> s = Student('Aim')
>>> hasattr(s,'name') #a含有name属性
True
>>> hasattr(s,'age') #a不含有age属性
False

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