1. Remove Set Element if Exists Theset.remove()method of Python will remove a particular element from the set. This method takes the single element you wanted to remove from the set as an argument, if the specified element does not exist in the set, then “KeyError” is returned. To ov...
区别于discard() def remove(self, *args, **kwargs): # real signature unknown """ Remove an element from a set; it must be a member. If the element is not a member, raise a KeyError. """ pass 1. 2. 3. 4. 5. 6. 7. 8.>>> s1 = {11,22,33,} >>> s1.remove(11) >>...
) print() action = input("> ").strip().upper() if action == "A": return "ADD" elif action == "R": return "REMOVE" elif action == "C": return "INVENTORY_REPORT" elif action == "O": return "REORDER_REPORT" elif action == "Q": return "QUIT" else: print("Unknown action!
if3inmy_set:print("3 exists in the set.")else:print("3 does not exist in the set.") 1. 2. 3. 4. 如果set中包含元素3,则输出"3 exists in the set.“,否则输出"3 does not exist in the set.”。 通过remove方法删除元素 如果我们想要删除set中的某个元素,可以使用remove方法: AI检测代码...
# 定义一个集合my_set={1,2,3,4,5}# 添加元素到集合my_set.add(6)print(my_set)# 输出: {1, 2, 3, 4, 5, 6}# 删除集合中的元素my_set.remove(3)print(my_set)# 输出: {1, 2, 4, 5, 6}# 检查元素是否在集合中if 4 in my_set:print('Element exists')# 输出: Element exists ...
1 if __name__=='__main__': 2 test() __name__ 是当前模块名,当模块被直接运行时模块名为 __main__ 。这句话的意思就是,当模块被直接运行时,代码将被运行,当模块是被导入时,代码不被运行。 更好的例子是为了代码重用。比如你现在写了一些程序,都存在单独的py文件里。有一天你突然想用1.py文件...
dns/dnsNameResolution" root_elem = etree.Element('dnsNameResolution') etree.SubElement(root_elem, 'host').text = host etree.SubElement(root_elem, 'addrType').text = addr_type req_data = etree.tostring(root_elem, "UTF-8") ret, _, rsp_data = ops_conn.get(uri, req_data) if ret !
last_element=my_list.pop() 输出: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 'pineapple' 6、列表推导式 列表推导式是for循环的简易形式,可以在一行代码里创建一个新列表,同时能通过if语句进行判断筛选 代码语言:javascript 代码运行次数:0
self.set_log_level()defset_context(self,data):self.context=data defadd(self,processor):ifnotisinstance(processor,PipelineProcessor):raiseException('Processor should be an isinstance of PipelineProcessor.')processor.log.setLevel(self.log_level)self.pipeline.append(processor)defremove(...
# 自动下载金山文档 # filename是文档名称 # url是文档的网址 # 要打开本地WPS并且登录,此脚本才能运行 # Chrome驱动器要提前下载好 def chromedriver(filename,url): if os.path.exists(r'C:\Users\EDZ\Downloads'+os.sep+filename): os.remove(r'C:\Users\EDZ\Downloads'+os.sep+filename) chrome_...