Pythonhasattr()Function ❮ Built-in Functions ExampleGet your own Python Server Check if the "Person" object has the "age" property: classPerson: name ="John" age =36 country ="Norway" x =hasattr(Person,'age') Try it Yourself » ...
print('country'inPeople.__dict__) #返回值:True print(hasattr(obj,'people_info')) #返回值:True print(People.__dict__) ##{'__module__':'__main__','country':'China','__init__': <function People.__init__ at0x1006d5620>,'people_info': <function People.people_info at0x10205d1...
print(getattr(functiondemo, "age")) # 获取不存在的属性,报错如下: # Traceback (most recent call last): # File "F:/Python/PycharmProjects/Mytest_code/tmp.py", line 11, in <module> # getattr(functiondemo, "age") # AttributeError: 'function_demo' object has no attribute 'age' print(...
res= hasattr(functiondemo,'addr')#先判断是否存在ifres: addr= getattr(functiondemo,'addr')print(addr)else: addr= getattr(functiondemo,'addr', setattr(functiondemo,'addr','北京首都'))#addr = getattr(functiondemo, 'addr', '河南许昌')print(addr) python中 and和or的用法: python中的and从左到...
printNameAge(blog)) # 输出结果 {'name': '小菠萝', 'age': 24, 'printNameAge': <function <lambda> at 0x10391a1f0>} 姓名:小菠萝 年龄:24 delattr 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # delattr delattr(blog, "age") delattr(blog, "printNameAge") print(blog.__dict__...
python hasattr函数 草头黄 天空大地 hasattr函数 第一个参数,对象 第二个参数,属性名字 对象有这个属性吗 >>> hasattr <built-in function hasattr> >>> help(hasattr) Help on built-in function hasattr in module builtins: hasattr(obj, name, /) Return whether the object has an attribute with the ...
print('country' in People.__dict__) #返回值:True print(hasattr(obj,'people_info')) #返回值:True print(People.__dict__) ##{'__module__': '__main__', 'country': 'China', '__init__': <function People.__init__ at 0x1006d5620>, 'people_info': <function People.people_info...
# 设置一个新的实例属性setattr(blog, "age", 24)# 设置一个新的实例方法setattr(blog, "printNameAge", lambda self: f"姓名:{self.name} 年龄:{self.age}")print(blog.__dict__)print(blog.printNameAge(blog))# 输出结果{'name': '小菠萝', 'age': 24, 'printNameAge': <function <lambda>...
(functiondemo, "age"))# 获取不存在的属性,报错如下:# Traceback (most recent call last):# File "F:/Python/PycharmProjects/Mytest_code/tmp.py", line 11, in# getattr(functiondemo, "age")# AttributeError: 'function_demo' object has no attribute 'age' print(getattr(functiondemo, "age",...
returnoutput_function(data) setattr(object, name, value) This is the counterpart ofgetattr(). The arguments are an object, a string and an arbitrary value. The string may name an existing attribute or a new attribute. The function assigns the value to the attribute, provided the object all...