python - 以两种不同的方式拼接字符串

Question

import re , strings , os ,sys
sentence = "abcdefghijkl"
for i in range(0,len(sentence),3):
    twoletters = sentence[i:i+2] + sentence[i+1:i+3]
    print twoletters

这给我：

abbc
deef
ghhi
jkkl

我想要的地方：

ab
bc
cd
de
ef
fg
gh
hi
ij
jk
kl

这种拼接怎么做？

Answer 1

>>> sentence = "abcdefghijkl"
>>> [sentence[i:i+2] for i in range(len(sentence) - 1)]
['ab', 'bc', 'cd', 'de', 'ef', 'fg', 'gh', 'hi', 'ij', 'jk', 'kl']

Answer 2

与您的想法保持一致但简化，我将执行以下操作

for i in range(0, len(sentence)-1):
    print sentence[i] + sentence[i + 1]

Answer 3

>>>sentence = "abcdefghijkl"
>>>for i in range(0, len(sentence)-1):
>>>    print sentence[i:i+2]
ab
bc
cd
de
ef
fg
gh
hi
ij
jk
kl

或使用列表理解

>>>[sentence[i:i+2] for i in range(0, len(sentence)-1)]
['ab', 'bc', 'cd', 'de', 'ef', 'fg', 'gh', 'hi', 'ij', 'jk', 'kl']

Answer 4

[sentence[i:i+2] for i in range(0,len(sentence)-1,1)]

['ab'，'bc'，'cd'，'de'，'ef'，'fg'，'gh'，'hi'，'ij'，'jk'，'kl']

Answer 5

>>> from itertools import tee, izip, islice
>>> sentence = "abcdefghijkl"
>>> x, y = tee(sentence)
>>> y = islice(y, 1, None)
>>> for a,b in izip(x, y):
...     print a + "" + b