我是 Python 的初学者,所以我得到了错误
回溯(最近一次通话最后):
文件“C:/Users/spchee/Documents/cc.py”,第 43 行,c("helloz", 2) 文件“C:/Users/spchee/Documents/cc.py”,第 35 行,c add_to_string (n) 文件“C:/Users/spchee/Documents/cc.py”,第 5 行,在 add_to_string 中如果 message[i].titlecase():
IndexError:字符串索引超出范围
我目前的代码是:
import math
message = ""
i=0
def add_to_string(modifier):
if message[i].titlecase():
encrypted = encrypted + string[modifier].upper()
else:
encrypted = encrypted +string[modifier]
def c(message,key):
string = "0abcdefghijklmnopqrstuvwxyz0"
encrypted = ""
legnth_message = len(message)
i = 0
for i in range (legnth_message-1):
n = 0
x = 0
while message[i] != string[x].lower():
x+=1;
while string[int(x)+int(n)] != "0":
n += math.copysign(1, key)
if abs(key)<abs(n):
n = (abs(n)-abs(key))*math.copysign(1,key)
if math.copysign(1,key) == 1:
add_to_string(n)
else:
add_to_string(27+n)
else:
add_to_string(x+key)
c("helloz", 2)
该代码应用作凯撒密码。提前致谢