python_day2

# str1 = "duoceshi"
# print(str1[0])
# print(str1[1])
# # print(str1[8])
# print(str1[4])
# print(str1[-4])
# print(str1[-8])
# print(str1[-9])# IndexError: string index out of range

# str1 = "duoceshi"
# # print(str1[0:5])
# # print(str1[:6])
# # print(str1[3:])
# # print(str1[-2:])
# # print(str1[0:10000])
# print(str1[6:1])
# print(str1[:])
# print(str1[-6:-2])

# str1 = "duoceshi"
# print(str1[0:5:-1])
# print(str1[6:1:-1])
# print(str1[:4:-1])
# print(str1[4::-1])
# print(str1[::-1])
# print(str1[-2:-6:-1])
# print(str1[1:6:3])

# str1 = "xiao ming"
# print(str1.capitalize())
#
# str2 = str1.title()
# print(str2)
#
# print(str1.count("x"))
#
# print("_".join(str1))
#
# list1 = str1.split(" ")
# print(list1)
# print(list1[0])
#
# str2 = "user_name"
# list2 = str2.split("_")
# print(list2)
# print("".join(list2))

# str1 = "Ddcfsdcfn"
# print(str1.strip("d"))

# print(str1.lstrip("d"))
#
# print(str1.rstrip("d"))
#
# print(str1.startswith("d"))
#
# print(str1.endswith("c"))
#
# print(str1.find("c"[0:4]))
# # print(str1.find("d",6))
#
# print(str1.rfind("f" [-2:-3]))

# str1 = "xiaozahang"
# print(str1.rfind( "a",0,3))

# print(str1.replace("d","e"))

# print(str1.lower())
#
# print(str1.upper())
#
# print(str1.isdigit())

# print(str1.isalpha())
#
# print(str1.isalnum())
#
# print(str1.istitle())

# print(str1.isupper())

# print(str1.islower())

# str1 ="xian05"
# list1 = list(str1)
# print(list1)
# print(type(list1))
# str2 = str(list1)
# print(str2)
# print(type(str2))

list3 = ["11", "22", "dec"]
# list3[0] = "55"
# print(list3)
#
# list3.append("88")
# print(list3)

# print(list3.index("11"))

# list3.remove("11")
# print(list3)

# del list3[0]
# print(list3)

# list3.sort()
# print(list3)

list4 = sorted(list3)
print(list4)

list3.reverse()
print(list3)