请问如何从一长字符串中，随机截取n段相同长度的短字符串？

Question

如从‘abcdefghijklmnopqrstuvwxyz’中随机产生['ab',''ef','ij','op']，多个2bp不重复的字符串。

Answer 1

import random

str1 ='abcdefghijklmnopqrstuvwxyz'
lst = random.sample(str1[:-2], 5)
lst1 = []
for one in lst:
    #print(str1.index(one))
    lst1.append(one + str1[str1.index(one)+1])
print(lst1)