将没有换行符的字符串拆分为具有最大列数的行列表

Question

我有一个长字符串（多个段落），我需要将其拆分为一个行字符串列表。确定“线”的基础是：

• 该行中的字符数小于或等于X（其中X是每行的固定列数_）
• OR，原始字符串中有换行符（将强制创建新的“行”。

我知道我可以在算法上做到这一点，但我想知道python是否有能够处理这种情况的东西。它基本上是自动换行字符串。

顺便说一下，输出行必须在字边界上打破，而不是字符边界。

以下是输入和输出的示例：

输入：

"Within eight hours of Wilson's outburst, his Democratic opponent, former-Marine Rob Miller, had received nearly 3,000 individual contributions raising approximately $100,000, the Democratic Congressional Campaign Committee said.

Wilson, a conservative Republican who promotes a strong national defense and reining in the size of government, won a special election to the House in 2001, succeeding the late Rep. Floyd Spence, R-S.C. Wilson had worked on Spence's staff on Capitol Hill and also had served as an intern for Sen. Strom Thurmond, R-S.C."

输出：

"Within eight hours of Wilson's outburst, his"
"Democratic opponent, former-Marine Rob Miller,"
" had received nearly 3,000 individual "
"contributions raising approximately $100,000,"
" the Democratic Congressional Campaign Committee"
" said."
""
"Wilson, a conservative Republican who promotes a "
"strong national defense and reining in the size "
"of government, won a special election to the House"
" in 2001, succeeding the late Rep. Floyd Spence, "
"R-S.C. Wilson had worked on Spence's staff on "
"Capitol Hill and also had served as an intern"
" for Sen. Strom Thurmond, R-S.C."

Answer 1

修改

您正在寻找的是textwrap，但这只是解决方案的一部分，而不是完整的解决方案。要考虑换行，您需要这样做：

from textwrap import wrap
'\n'.join(['\n'.join(wrap(block, width=50)) for block in text.splitlines()])

>>> print '\n'.join(['\n'.join(wrap(block, width=50)) for block in text.splitlines()])

Within eight hours of Wilson's outburst, his
Democratic opponent, former-Marine Rob Miller, had
received nearly 3,000 individual contributions
raising approximately $100,000, the Democratic
Congressional Campaign Committee said.

Wilson, a conservative Republican who promotes a
strong national defense and reining in the size of
government, won a special election to the House in
2001, succeeding the late Rep. Floyd Spence,
R-S.C. Wilson had worked on Spence's staff on
Capitol Hill and also had served as an intern for
Sen. Strom Thurmond

Answer 2

您可能希望在标准库中使用textwrap函数：

http://docs.python.org/library/textwrap.html