In this article, you will learn different ways to check if an object is iterable in Python. 1. Using theiter()function Theiter()function takes an object as an argument and returns an iterator object if the object is iterable. Under the hood, theiter()function checks if the object has__...
1#使用__metaclass__(元类)的高级python用法2classSingleton2(type):3def__init__(cls,name,bases,dict):4super(Singleton2,cls).__init__(name,bases,dict)5cls._instance=None6def__call__(cls,*args,**kw):7ifcls._instance is None:8cls._instance=super(Singleton2,cls).__call__(*args,**...
``` # Python script to check the status of a website import requests def check_website_status(url): response = requests.get(url) if response.status_code == 200: # Your code here to handle a successful response else: # Your code here to handle an unsuccessful response ``` 说明: 此...
inspect.isclass(object) Return True if the object is a class, whether built-in or created in Python code. inspect.ismethod(object) Return True if the object is a bound method written in Python. inspect.isfunction(object) Return True if the object is a Python function, which includes funct...
(ops_conn, url, local_path) if ret is OK: break cnt += 1 if ret is not OK: return ERR return OK class StartupInfo(object): """Startup configuration information image: startup system software config: startup saved-configuration file patch: startup patch package """ def __init__(...
a=1 b=2 if a<b: print a 报错: IndentationError: expected an indented block 原因: 缩进有误,python的缩进非常严格,行首多个空格,少个空格都会报错。这是新手常犯的一个错误,由于不熟悉python编码规则。像def,class,if,for,while等代码块都需要缩进。
()self.check_ping_result()self.f.close()defopen_ip_record_file(self):self.f=open('reachable_ip.txt','a')defcheck_ping_result(self):ifself.ping_result==0:self.f.write(self.ip+"\n")defremove_last_reachable_ip_file_exist(self):ifos.path.exists('reachable_ip.txt'):os.remove('...
inspect.isclass(object) Return true if the object is a class, whether built-in or created in Python code. inspect.ismethod(object) Return true if the object is a bound method written in Python. inspect.isfunction(object) Return true if the object is a Python function, which includes funct...
1#1.实例化后的对象对类属性进行修改,不会影响模板类中属性的值2classPerson(object):3#类属性4name="student"56defdump(self):7#要在函数中调用类属性,就要在属性前添加self进行调用8print(f"{self.name} is dumping")910student=Person()11student.name="teacher"12print(student.name)#teacher13print(Pers...
classLicenseError(Exception):passimportarcpytry:ifarcpy.CheckExtension("3D") =="Available": arcpy.CheckOutExtension("3D")else:# Raise a custom exceptionraiseLicenseError arcpy.env.workspace ="D:/GrosMorne"arcpy.HillShade_3d("WesternBrook","westbrook_hill",300) ...