# python3 中的range是一个可迭代对象 # 写的怎么样打印出来就是怎样 # 获取成列表: # list(range(0,10)) 转成列表的时候顾头不顾尾 # python2 中的range返回的是一个列表 # # range(起始位置,终止位置) -- [起始位置:终止位置] # range(终止位置) -- [:终止位置] # range(起始位置,终止位置,步...
[1, '俺插入值在此!', 1.0, None, True, ['list', 1], (1, 2), {1, 4}, {'one': 1}, '俺是末尾值'] 注,前边的insert也会保留更改! 3、往列表里面添加列表 ls+=lt / ls.extend(lt) >>> ls_num1=list(range(1,4))#左开右闭 >>> ls_num2=list(range(3,0,-1))#逆序 >>>...
range 范围 今日总结 元组小结 python 第四章 回到顶部 list 列表 # 列表 -- list 相当于一个容器 # 有序的,可变的,支持索引,可增删改 # 用于存储数据 # 支持的数据类型:str int bool list tuple dict set # 定义一个列表 lst = ["a",123,True,[123],(1,),{"a":"b"},{"2"}] #用,号分割...
Theextend()method in Python allows you to add any single element or iterable object, like a list or dictionary tuple, to the end of the list. In the above section, you have used theappend()method to add multiple strings (email) to the list one by one, but using theextend()method, ...
11 def addListToInventory(inven,addedItems): 12 for i in range(len(addedItems)): 13 if addedItems[i] in inven.keys(): 14 inven[addedItems[i]]+=1 15 else: 16 inven.setdefault(addedItems[i],1) 17 return inv 18 inv={'gold coin':42,'rope':1} ...
li = [random.randint(2,7) for i in range(10)] print(li) print(list(map(funtor,li))) 执行结果: /home/kiosk/PycharmProjects/westos5/venv/bin/python /home/kiosk/PycharmProjects/westos5/内置地高阶函数.py [3, 7, 3, 3, 2, 5, 3, 2, 2, 4] ...
生成一个生成器,不干活18#n = 1019#g = (add(10,i) for i in (add(10,i) for i in g)) # 生成另一个生成器,也不干活20#n = 521#g = (add(5,i) for i (in add(5,i) for i in (add(5,i) for i in g))) # 生成又一个生成器,还是不干活22#print(list(g)) # 看见list,...
local.settings.json: Used to store app settings and connection strings when it's running locally. This file doesn't get published to Azure. To learn more, see local.settings.file. requirements.txt: Contains the list of Python packages the system installs when it publishes to Azure. Dockerfil...
# Method 1: split()start_time=time.time()for_inrange(1000000):string="apple,banana,cherry"list_of_fruits=string.split(",")end_time=time.time()print(f"Time taken for split():{end_time-start_time}seconds") # Method 2: List Comprehensionstart_time=time.time()for_inrange(1000000):strin...
defadd_to_list(stu,stu_list):iflen(stu_list):ifcmp_student(stu,stu_list[0]):# 比第一名还优秀 stu_list.insert(0,stu)elif notcmp_student(stu,stu_list[-1]):# 比最后一名还差 stu_list.append(stu)else:foriinrange(len(stu_list)-1):if(notcmp_student(stu,stu_list[i]))and(cmp_...