要尋找物件的屬性,請使用 Python 中的 getarr() 方法。若要檢查屬性是否存在,請使用 hasattr() 方法。使用 Python 中的 setattr() 方法設定屬性。
要存取物件的屬性,我們將使用 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'))
Name = Amit Age = 18
在此範例中,為了設定屬性,我們將使用 setattr() 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'))
Tim True 95 True
在這個例子中,我們將學習如何存取方法 -
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()
Tim True 95 True Hello from demo() function
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