雷程4.13作业
# a = 7# b = 3
# print(a+b) #10
# print(a-b) #4
# print(a*b) #21
# print(a/b) #2.3333333333333335
# print(a%b) #1
# print(a**b) #343
# print(a//b) #2
# a = 10
# b = 6
# #a += b #16
# #a -= b #4
# # a *= b #60
# # a /= b #1.6666666666666667
# #a %= b #4
# # a //= b #1
# # a **= b #1000000
# print(a)
# a = 3
# b = 5
# c = 3
# print(a<b) #True
# print(a>c) #false
# print(a >= c) #True
# print(a <= c) #True
# print(a != c) #False
# print(a == c) #True
# a = 3
# b = 5
# c = 3
# print(a>b and b>c) #False
# print(a<b and b>c) #True
# print(a>=c or b>=c) #True
# print(not a>b) #True
# print(not a==c ) #False
# list1 =
# print("666" not in list1 ) #True
# print("leicheng" not in list1) #False
# print("liuliangliang" in list1) #True
# a = 9
# b = 18
# # '''
# # 00001001
# # 00010010
# # '''
# # print(a&b) #0
# # print(a|b) #27
# # print(a^b) #27
# print(~b) #-19
# print(~-a) #8
# print(a<<2) #36
# print(b>>2) #4
# str1 = "xianshi"
# print(str1) #a
# print(str1) #i
# # print(str1) #string index out of range
# print(str1[-1]) #i
# print(str1[-7]) #x
# # print(str1[-8]) #string index out of range
# str1 = "shanxisheng"
# # print(str1) #shanxi
# # print(str1[:5]) #shanx
# # print(str1) #anxisheng
# # print(str1[:6:-1]) #gneh
# # print(str1) #ahs
# print(str1[-5:-2]) #she
# print(str1[-3:4:-1]) #ehsi
# print(str1[::]) #shanxisheng
# print(str1[::-1]) #gnehsixnahs
# print(str1[-2:0]) #空值
# str1 = "changanqu"
# print(str1) #hna
# print(str1[:6:3]) #cn
# print(str1) #aau
# print(str1[::-2]) #ungac
# str1 = "nihao,shanxi"
# print(str1.capitalize()) #Nihao,shanxi
# print(str1.title()) #Nihao,Shanxi
# print(str1.count("i")) #2
# print("~".join(str1))#n~i~h~a~o~,~s~h~a~n~x~i
# print(str1.split(",")) #'nihao', 'shanxi'
# str1 = "good_idea"
# '''
# 变成GoodIdea
# '''
# str2 = str1.title().split("_")
# print("".join(str2))
# print("".join(str1.title().split("_")))
# str1 = "weiquzhen"
# print(str1.strip("ween")) #iquzh
# # print(str1.strip("w")) #eiquzhen
# print(str1.strip("n")) #weiquzhe
# str1 = "zxcvbnm"
# print(str1.lstrip("zx")) #cvbnm
# str1 = "asdfghjkl"
# print(str1.rstrip("klj")) #asdfgh
# str1 = "qazwsxedc"
# print(str1.startswith("qa")) #True
# print(str1.startswith("a")) #False
# print(str1.startswith("q")) #True
# str1 = "plmoijn"
# print(str1.endswith("jn"))# True
# print(str1.endswith("j"))# False
# # file_name = input("请输入上传文科的格式名称：")
# if file_name.endswith(".word"):
# print("有效")
# else:
# print("无效")
# str1 = "fbkjdsmckdsl"
# print(str1.find("k")) #2
# print(str1.find("d")) #4
# print(str1.find("s")) #5
# str1 = "qwertyuiopq"
# print(str1.replace("we","az")) #qazrtyuiopq
# print(str1.replace("u","m")) #qwertymiopq
# print(str1.replace("q","b",1)) #bwertyuiopq
# print(str1.replace("q","b",2)) #bwertyuiopb
#
# str = "hfuisaHFUIAhjif"
# print(str.lower()) #hfuisahfuiahjif
# print(str.upper()) #HFUISAHFUIAHJIF
# str = "hfuisaHFUIAhjif432"
# print(str.isdigit()) #False
# print(str.isalpha()) #False
# print(str.isalnum()) #True
# str1 = "djisahfuuDHAUIF"
# print(str1.isalpha()) #True
# print(str1.isalnum()) #True
# str = "4478967432"
# print(str.isdigit()) #Ture
# print(str.isalnum()) #Ture
# str = "hfuisaHFUIAhjif432$#@#!"
# print(str.isalnum()) #False
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