python - 字符串格式 : Columns in line

Question

我正在尝试格式化字符串，使两者之间的所有内容都对齐。

APPLES                           $.99                           214                       
kiwi                             $1.09                           755 

我正在尝试这样做:

fmt = ('{0:30}{1:30}{2:30}'.format(Fruit,price,qty))

我怎样才能让一个列排队？我阅读了文档，但我很困惑。我在想 {1:30} 会让它变成 30 个空格，然后它会打印下一个项目，但它似乎距离上一个项目结束的地方有 30 个空格。

谢谢

Answer 1

str.format()使您的字段在可用空间内左对齐。使用 alignment specifiers更改对齐方式:

'<' Forces the field to be left-aligned within the available space (this is the default for most objects).

'>' Forces the field to be right-aligned within the available space (this is the default for numbers).

'=' Forces the padding to be placed after the sign (if any) but before the digits. This is used for printing fields in the form ‘+000000120’. This alignment option is only valid for numeric types.

'^' Forces the field to be centered within the available space.

这是一个例子(左右对齐):

>>> for args in (('apple', '$1.09', '80'), ('truffle', '$58.01', '2')):
...     print '{0:<10} {1:>8} {2:>8}'.format(*args)
...
apple         $1.09       80
truffle      $58.01        2