如何在 Python 中找到对象的属性或方法?
若要查找对象的属性,请使用 Python 中的 getarr() 方法。若要检查属性是否存在,请使用 hasattr() 方法。使用 Python 中的 setattr() 方法设置属性。
访问对象的属性
示例
若要访问对象的属性,我们将使用 Python 中的 getattr() 方法 -
class student: st_name ='Amit' st_age ='18' st_marks = '99' def demo(self): print(self.st_name) print(self.st_age) print(self.st_marks) # Create objects st1 = student() st2 = student() # The getattr() is used here print ("Name = ",getattr(st1,'st_name')) print ("Age = ",getattr(st2,'st_age'))
输出
Name = Amit Age = 18
访问和设置类属性
示例
在此示例中,我们将使用 setattr() 方法来设置属性。
class student: st_name ='Tim' st_age ='18' def demo(self): print("Hello from demo() function") # The getattr() is used here print(getattr(student,'st_name')) # Returns true if object has attribute print(hasattr(student,'st_age')) # Set additional attribute st_marks setattr(student,'st_marks','95') # Get Attribute print(getattr(student,'st_marks')) # Checking for an attribute print(hasattr(student,'demo'))
输出
Tim True 95 True
访问方法
示例
在此示例中,我们将学习如何访问方法 -
class student: st_name ='Tim' st_age ='18' def demo(self): print("Hello from demo() function") # The getattr() is used here print(getattr(student,'st_name')) # Returns true if object has attribute print(hasattr(student,'st_age')) # Set additional attribute st_marks setattr(student,'st_marks','95') # Get Attribute print(getattr(student,'st_marks')) # Checking for an attribute print(hasattr(student,'demo')) # Access methods using an object st1 = student() st1.demo()
输出
Tim True 95 True Hello from demo() function
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