擅长:python、mysql、java
<p>在某些方面,字符串类似于Python中的列表<a href="https://docs.python.org/2/library/stdtypes.html#sequence-types-str-unicode-list-tuple-bytearray-buffer-xrange" rel="nofollow">you can reference their contents by index, and splice them and so on</a>。你知道吗</p>
<p>因此,您可以使用字符串中字符的索引来提取每个包装字符串的最后4个字符:</p>
<pre><code>input_string = 'fhsdkfhskdslshsdkhlghsbksjvsfgsdnfsfbjfgzfgaavzaeafeaeaddacbytt!tw'
split_strings = wrap(input_string, 22)
add_string = '' # nothing there at first, but will be updated as we process each wrapped string
for output_string in split_strings:
print add_string + output_string
add_string = output_string[-4:] # "[-4:]" means: "from the fourth last char of the string, to the end"
</code></pre>
<p>输出:</p>
<pre><code>fhsdkfhskdslshsdkhlghs
lghsbksjvsfgsdnfsfbjfgzfga
zfgaavzaeafeaeaddacbytt!tw
</code></pre>