标签：strip() range python基础 insert append pop index span type
一.列表
1.
# li = [‘alex‘,[1,2,3],‘wusir‘,‘egon‘,‘女神‘,‘taibai‘] # l1 = li[0] # print(l1) # l2 = li[1] # print(l2) # l3 = li[0:3] # print(l3)
2.增加 append insert
# li.append(‘日天‘) # li.append(1) # print(li) # while 1: # username = input(‘>>>‘) # if username.strip().upper() == ‘Q‘: # break # else: # li.append(username) # print(li) # li.insert(4,‘春哥‘) # print(li) # li.extend(‘二哥‘) # li.extend([1,2,3]) # print(li)
3.删
li = [‘taibai‘,‘alex‘,‘wusir‘,‘egon‘,‘女神‘,] name = li.pop(1) # 返回值 name = li.pop() # 默认删除最后一个 print(name,li) # li.remove(‘taibai‘) # 按元素去删除 # print(li) # li.clear() # 清空 # print(li) # del li # del li[0:2] # 切片去删除 # print(li)
4.改
# li[0] = ‘男兽‘ # li[0] = [1,2,3] #切片 # li[0:3] = ‘云姐plfdslkmgdfjglk‘ # li[0:3] = [1,2,3,‘春哥‘,‘咸鱼哥‘] # print(li)
5.查
# for i in li: # print(i) # print(li[0:2])
6.公共方法
# l = len(li) # print(l) # num = li.count(‘taibai‘) # print(num) # print(li.index(‘wusir‘)) # li = [1,5,4,7,6,2,3] # #正向排序 # # li.sort() # # print(li) # #反向排序 # # li.sort(reverse=True) # # print(li) # #反转 # li.reverse() # print(li)
7.列表嵌套
li = [‘taibai‘,‘武藤兰‘,‘苑昊‘,[‘alex‘,‘egon‘,89],23] print(li[1][1]) name = li[0].capitalize() print(name) li[0] = name li[0] = li[0].capitalize() #li[2] = ‘苑日天‘ print(li[2].replace(‘昊‘,‘ritian‘)) li[2] = li[2].replace(‘昊‘,‘ritian‘) li[3][0] = li[3][0].upper() print(li)
二.元祖
1.#元祖 只读列表，可循环查询，可切片。
#儿子不能改，孙子可能可以改。
tu = (1,2,3,‘alex‘,[2,3,4,‘taibai‘],‘egon‘) print(tu[3]) print(tu[0:4]) for i in tu: print(i) tu[4][3]=tu[4][3].upper() print(tu) tu[4].append(‘sb‘) print(tu)
2.str跟list转换
s = ‘alex‘ s1 = ‘sb‘.join(s) print(s1) #列表转化成字符串 list -----> str join li = [‘taibai‘,‘alex‘,‘wusir‘,‘egon‘,‘女神‘,] s = ‘++++‘.join(li) #str ----->list split() print(s)
3.range的使用
#range [1,2,3,4,5,6,.......100........] ‘‘‘ for i in range(3,10): print(i) for i in range(10): print(i) for i in range(0,10,3): print(i) for i in range(10,0,-2): print(i) for i in range(10,-1,-2): print(i) ‘‘‘ li = [1,2,3,5,‘alex‘,[2,3,4,5,‘taibai‘],‘afds‘] for i in li: if type(i) == list: for k in i: print(k) else:print(i) ‘‘‘ for i in range(len(li)): if type(li[i]) == list: for j in li[i]: print(j) else:print(li[i]) ‘‘‘
标签：strip() range python基础 insert append pop index span type
原文地址：https://www.cnblogs.com/845902050tsb/p/9785349.html
