1# bin()#二进制
# r = bin(11)
# print(r)
2 # oct()#八进制
# r = oct(14)
# print(r)
3 # int()#十进制
4 # hex()#十六进制
# r = hex(14)
# print(r)
5 #二进制转十进制
# i = int('0b11',base = 2)
# print(i)
6# 生成一个随机数，65-90
# 数字转化为正字母：chr（数字）
# import random
# temp = ""
# for i in range(6):
# num = random.randrange(0,4)
# if num == 3 or num == 1:
# rad2 = random.randrange(0,10)
# temp = temp + str(rad2)
# else:
# rad1 = random.randrange(65,91)
# c1 = chr(rad1)#数字转换为正字母
# temp = temp +c1
# print(temp)
7 #验证码
# import random
# temp = ""
# for i in range(6):
# num = random.randrange(0,4)
# if num == 1 or num == 3:
# rad1 = random.randrange(0,9)
# temp = temp + str(rad1)
# else:
# rad2 = random.randrange(65,91)
# c = chr(rad2)
# temp = temp + c
# print(temp)
#sort
# char = ["sad","2","1","没"]
# new_char = sorted(char)
# print(new_char)