我正在尝试格式化一些字符串以在命令行上输出,报告样式,并且正在寻找格式化字符串的最简单方法,以便我可以获得自动段落格式。

在 perlform 格式化是通过“格式”功能完成的

format Something =
    Test: @<<<<<<<< @||||| @>>>>>
            $str,     $%,    '$' . int($num)
.

$str = "widget";
$num = $cost/$quantity;
$~ = 'Something';
write;

perlform 的变化允许文本被干净地包装,对于帮助屏幕、日志报告等很有用。

有 python 等价物吗?或者我可以使用 Python 的新字符串 format 函数编写的合理黑客?

我想要的示例输出:
Foobar-Title    Blob
  0123          This is some long text which would wrap
                past the 80 column mark and go onto the
                next line number of times blah blah blah.
  hi there      dito
  something     more text here. more text here. more text
                here.

最佳答案

Python 中没有像这样的自动格式化。 (.format 函数语法是从 C# 借来的。)毕竟,Perl 是“实用提取和报告语言”,而 Python 不是为格式化报告而设计的。

您的输出可以使用 textwrap 模块完成,例如

from textwrap import fill
def formatItem(left, right):
   wrapped = fill(right, width=41, subsequent_indent=' '*15)
   return '  {0:<13}{1}'.format(left, wrapped)

...

>>> print(formatItem('0123', 'This is some long text which would wrap past the 80 column mark and go onto the next line number of times blah blah blah.'))
  0123         This is some long text which would wrap
               past the 80 column mark
               and go onto the next line
               number of times blah blah
               blah.

请注意,这假设“左”不跨越 1 行。更通用的解决方案是
from textwrap import wrap
from itertools import zip_longest
def twoColumn(left, right, leftWidth=13, rightWidth=41, indent=2, separation=2):
    lefts = wrap(left, width=leftWidth)
    rights = wrap(right, width=rightWidth)
    results = []
    for l, r in zip_longest(lefts, rights, fillvalue=''):
       results.append('{0:{1}}{2:{5}}{0:{3}}{4}'.format('', indent, l, separation, r, leftWidth))
    return "\n".join(results)

>>> print(twoColumn("I'm trying to format some strings for output on the command-line", "report style, and am looking for the easiest method to format a string such that I can get automatic paragraph formatting."))
  I'm trying to  report style, and am looking for the
  format some    easiest method to format a string such
  strings for    that I can get automatic paragraph
  output on the  formatting.
  command-line

关于段落的 Python 字符串格式化程序,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3096402/

10-13 08:27
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