day02练习

# name = input("请输入你的名字：")
# age = int(input("请输入你的年龄："))
# msg = '''
# ------- %s 的博客 -------
# Name : %s
# Age  : %s
# -------------------------
# ''' % (name, name, age)
# print(msg)

# 小作业，判断敏感词汇
# print(2**24)
# s = input(">>>")
# if not s:
#     print("不能为空")
# else:
#     pass
# a = "sflsjfslfjslfsjfs"
# a1 = a.split('s')
# print(a1)
# a = "\noldboy\t"
# a1 = a.strip()
# print(a)
# print(a1)
# a = 'addoldboydb'
# a1 = a.strip("addbd")
# print(a)
# print(a1)

# s = 'oldBoy'
# s1 = s.capitalize()
# print(s)
# print(s1)
# s2 =s.swapcase()
# print(s2)
# s3 = s.upper()
# s4 = s.lower()
# print(s3,s4)

# L1 = ['alex','wusir','太白',100,'女神']
# # L1.append("xxx")
# # L1.insert(2,'xxx')
# # L1.extend('abc')
# # L1.extend(['abc','dgjd'])
# # L1.pop(2)
# # L1.remove('wusir')
# # L1.clear()
# # del L1[2]
# # del L1[::2]
# # L1[1] = '3'
# # L1[:3] = 'abcdef'
# # for i in L1:
# #     print(i)
# # print(L1)
# # captialize
# # swapcase
# # center
# # strip
# # upper
# # lower
# rep = L1.pop(2)
# print(L1)

# L1 = ['alex', 'wusir',[1,'taibai']]
# L1[1] = L1[1].upper()
# L1[2][1] = L1[2][1].capitalize()
# print(L1)

# L1 = ['alex','wusir','taibai',100,'女神']
# for i in range(len(L1)):
#     print(i)

# a = 10
# b = 100
# a,b = b,a
# print(a,b)

# dic = {'name': 'TaiBai', 'age': 25, 'sex': '男',}
# print(dic.items())
# print(list(dic.items()))
# for k,v in dic.items():
#     print(k,v)

# l1 = [11, 22, 33, 44, 55, 66]
# for i in range(len(l1)):
#     if i % 2 == 1:
#         l1 = del l1[i]

# dic = {'k1':'v1','k2':'v2','k3':'v3','name': 'alex'}
# L1 = dic.items()
# for i in dic.items():
#     if  'k' in i:

# s = 'python24期'
# print(s[:2])
# print(s[:6])
# print(s[:])
# print(s[:6:2])
# s3 = s[-1:-4:-1]
# print(s3)

# s = 'oldBoy'
# s1 = s.capitalize()  capitalize capitalize capitalize capitalize
# print(s1)
# print(s)

# swapcase() 大小写反转 *
# s2 = s.swapcase()  swapcase  swapcase  swapcase swapcase
# print(s2)

# s = 'oldBoy'
# center 居中 设置宽度 *
# s3 = s.center(20)
# s3 = s.center(20, "*")   center  center  center  center  center
# print(s3)

# ss = 'alex wusir2taibai*ritian'
# # title() 非字母隔开的'单词'首字母大写 *   title title title title title
# s4 = ss.title()
# print(s4)

# s = 'oldBoy'
# upper() 全大写    **
# lower() 全小写    **
# s5 = s.upper()
# s6 = s.lower()
# print(s5)
# print(s6)

# username = input('请输入账号：')
# password = input('请输入密码：')
# code = 'QerAg'.upper()
# your_code = input('请输入验证码：').upper() # QERAG，Qerag.....
# if username == 'alex' and password == 'SB':
#     if your_code == code:
#         print('登录成功')

# username = input("请输入你的用户名：")
# password = input("请输入你的密码：")
# codeyzm = "yanzhengma".upper()
# youcode = input("请输入你的验证码：").upper()
# if  username == 'xxx'  and password == '123':
#     if youcode == codeyzm:
#         print("登陆成功！")

# startswith('o') 判断以什么开头  **
# endswith() 判断以什么结尾 **
# s = 'oldBoy'
# s6 = s.startswith('o')
# s61 = s.startswith('old')       startswith   startswith startswith
# s62 = s.startswith('oldBoy')    endswith   endswith   endswith
# s63 = s.startswith('o',1)
# print(s6)
# print(s61)
# print(s62)
# print(s63)

# username = input('请输入账号：').strip()
# password = input('请输入密码：').strip()
# if username == 'alex' and password == 'SB':
#     print('登录成功')

# username = input("请输入你的账号：").strip()
# password = input("请输入你的密码：").strip()
# if  username == "zhangxu"  and password == "123":  strip strip strip strip strip
#     print("登陆成功")

# s = 'alex wusir barry'
ss = 'alex,wusir,barry'
# ss1 = ',alex,wusir,barry'
# split  str ---> list ***
# s8 = s.split()  # 默认按照空格分割
# s9 = ss.split(',')  # 指定以','分割
# s10 = ss.rsplit(",",1) #后面的1（count）为分割的次数
#
# print(s8)
# print(s9)
# print(s10)
# print(ss1.split(','))
# print(ss.rsplit(',',0))

s = 'oldboy'  #capitalize swapcase center title upper lower strip startswith endswith split rsplit join
# join   ***    join  join join join join
# s10 = '_'.join(s)
# s11 = 'alex'.join(s)
# print(s10)
# print(s11)
#   一个用途list ---> str
# l1 = ['alex', 'wusir', 'barry'] # --> s = 'alex wusir barry'
# s10 = ' '.join(l1)
# print(s10)

# s = '老男孩 老男孩 老男孩 alex linux python 大数据 alex'
# replace ***  #把前面的替换成后面的，可选次数
# s101 = s.replace("老男孩",'张旭',2)  #后面的数字为替换的次数
# print(s101)
# s11 = s.replace('alex','太白')
# s12 = s.replace('alex','太白',1)
# print(s12)

# is 系列 ***
# name = 'abc'
# print(name.isalnum()) #字符串由字母或数字组成
# print(name.isalpha()) #字符串只由字母组成
# print(name.isdigit()) #字符串只由数字组成 str ---> int 可以作为一个判断条件

#captialize swapcase center title upper lower strip split join replace isdigit
#startswith endswith rsplit lstrip rstrip  isalnum  isalpha format

# 格式化输出 format  ***
# res = '{} {} {}'.format('egon', 18, 'male')
# print(res)
# res='{1} {0} {1}'.format('egon', 18, 'male')
# print(res)
# res='{name} {age} {sex}'.format(sex='male',name='egon',age=18)
# a = "{1} {0} {1}".format("d","c","a")
# print(a)

s = 'oldboy'
# find  通过元素找索引，找不到返回-1  ***
# index 通过元素找索引，找不到报错  ***
# print(s.find('d'))
# print(s.find('o')) # 可切片
# print(s.find('A')) # 可切片
# print(s.index('d'))
# print(s.index('A'))
# s1 = s.find("l")
# s2 = s.find("m")
# print(s1)
# print(s2)
# s3 = s.index("n")
# print(s3)

# 公共方法 ***
# s = 'fjsdaklfjsdklafjsadf'
# len 测量个数
# print(len(s))
# count 某个元素出现的次数
# print(s.count('f'))

#captialize swapcase center title upper lower strip lstrip rstrip startswith endswith
#replace format join split rsplit isdigit isalnum isalpha len count find index

# s1 = 'fdksj'
#for 变量 in iterable:  有限循环
# for i in s1:
#     print(i+'alex')

# 只要循环被break打断，则不执行else程序。
# for i in s1:
#     print(i)
#     if i == 'k':
#         break
# else:
#     print(666)

# l1 = ['alex', 'wusir', 'wusir', 'wusir','太白', 100, '女神']
# 增 三种方式：append insert extend
# append行尾追加  append append append append  append
# l1.append('文刚')
# print(l1.append('文刚'))
# print(l1)
# insert 在哪里插入什么,可以自己选定位置
# l1.insert(1,'oldboy')
# print(l1)
# extend() 迭代的追加
# l1.extend('abc')
# l1.extend(['abc', 'erf'])
# print(l1)
# append  insert  extend

# 删

# pop 按照索引删除,返回值
# ret = l1.pop(1)
# print(ret)
# print(l1)

# remove
# l1.remove('alex')
# print(l1)

# clear
# l1.clear()
# print(l1)

# l1 = ['alex', 'wusir', 'wusir', 'wusir','太白', 100, '女神']
# del
# 按照索引
# del l1[1]
# print(l1)
# 按照切片（步长）
# del l1[:2]
# print(l1)
# del l1[::2]
# print(l1)

# l1 = ['alex', 'wusir', 'wusir', 'wusir','太白', 100, '女神']
# 改
# 按照索引
# l1[1] = 'SB'
# print(l1)
# 按照切片（步长）
# l1[:2] = 'fsdjksdhfjsdf' #迭代加入
# l1[::2] = 'abcd'    # 加上步长一定要一一对应。必须一一对应，少了不行会报错
# l1[::2] = ['alex', [12,3], 'c','d'] # 加上步长一定要一一对应。
# print(l1)

# 查
# 索引，切片，切片（步长）
# for
# for i in l1:
#     print(i)

# l1 = ['alex', 'wusir', 'wusir', 'wusir','太白', 100, '女神']
# 其他方法：
# print(l1.index('太白')) #通过元素查索引
# len()
# print(len(l1))
#count
# print(l1.count('wusir'))
# l1 = [2, 3, 5, 1, 9, 8, 7, 6]
# l1.sort() # 从小到大排序
# print(l1)
# l1.sort(reverse=True) # 从大到小排序
# print(l1)
# l1.reverse()  # 翻转
# print(l1)
# print(l1)
# why:
# where:


# l1 = ['alex', 'wusir', [1,'taibai']]
# 'wusir'全部大写
# l1[1] = l1[1].upper()
# print(l1)

# 'taibai'首字母大写
# l1[-1][-1] = l1[-1][-1].capitalize()
# print(l1)
# print(l1[-1][-1])

# range 可以看做自定义的数字范围的列表，一般都是与for循环结合。可以设置步长
# a = range(1, 100)
# print(a)
# for i in range(10):
#     print(i)

# for i in range(1,20,2):
#     print(i)

# for i in range(1,20,3):
#     print(i)
# for i in range(20, 1, -1):
#     print(i)

# l1 = ['alex', 'wusir', 'wusir', 100, '女神']
#
# for i in l1:
#     print(l1.index(i))

# 利用for range 打印出列表的索引。

# for i in range(len(l1)):
#     print(i)


# 键值对出现，Key:value 字典的key唯一重复，可以存储大量的关系型数据。
# 字典3.5版本包括3.5之前是无序的。3.6之后有序。首次存入数据的顺序

# 字典的key：str,int,（bool值，tuple不常用）  不可变的数据类型(可哈希的)
# 字典的value：任意数据类型。

# dic = {'name_list':['张三', '李四'],
#        'alex': {'sex':'男','爱好': '非男'},
#        }
# print(dic)

dic = {'name': 'TaiBai', 'age': 25, 'sex': '男'}
# 增：
# 按照键值对  有则改之，无则添加
# dic['job'] = 'Teacher'
# dic['name'] = 'alex'
# setdeafult

# dic.setdefault('job') #无则添加，有则不变。
# dic.setdefault('job','Teacher')      # setdefault setdefault  setdefault  setdefault
# dic.setdefault('name','alex')
# print(dic)

# 删：
# ret = dic.pop('name')
# print(ret) # 返回值是删除的值
# print(dic)

# 清空
# dic.clear()
# print(dic)

# del
# del dic['name']
# print(dic)

# 改

# dic['name'] = 'alex'
# print(dic)

# dic = {"name":"jin","age":18,"sex":"male"}
# dic2 = {"name":"alex","weight":75}
# dic2.update(dic)  # 将dic 的所有键值对覆盖并添加到dic2中。dic不变。
# print(dic)
# print(dic2)

# 查
# print(dic['name'])
# print(dic['name1'])

# str1 = "rrrrrrrr"
# str2 = str1.replace(str1[2],'x')
# print(str1,str2)

li = ['alex','银角','女神','egon','太白']
# for i in enumerate(li):
#     print(i)
# for index,name in enumerate(li,1):
#     print(index,name)
# for index, name in enumerate(li, 100):  # 起始位置默认是0，可更改，此为起始位置100
#     print(index, name)

# s1 = "xx"
# s2 = s1.encode("utf-8")
# s3 = s1.encode("gbk")
# print(s2)
# print(s3)
#
# s4 = b'\xe5\xbc\xa0\xe6\x97\xad'
# s5 = s4.decode("utf-8")
# print(s5)

# 深浅copy
l1 = ["alex", "wusir", "burry", [1, 2, 3]]
# 浅copy 只是copy表层，即开辟新的内存地址，深层还是共用内存
# l2 = l1.copy()
# print(id(l1), id(l1[-1]))
# print(id(l2), id(l1[-1]))

# 深copy 全部都是新的内存地
# import copy
# l3 = copy.deepcopy(l1)
# print(id(l1), id(l1[-1]))
# print(id(l3), id(l3[-1]))

#
# f1 = open("d:\\a.txt", encoding="utf-8", mode="r")
# content = f1.read()
# print(content)
# f1.close()