以指定列宽格式化字符串

# 问题

你有一些长字符串，想以指定的列宽将它们重新格式化。

# 解决方案

使用 textwrap 模块来格式化字符串的输出。比如，假如你有下列的长字符串：

s = "Look into my eyes, look into my eyes, the eyes, the eyes, \
the eyes, not around the eyes, don't look around the eyes, \
look into my eyes, you're under."

1
2
3

下面演示使用 textwrap 格式化字符串的多种方式：

>>> import textwrap
>>> print(textwrap.fill(s, 70))
Look into my eyes, look into my eyes, the eyes, the eyes, the eyes,
not around the eyes, don't look around the eyes, look into my eyes,
you're under.
>>> print(textwrap.fill(s, 40))
Look into my eyes, look into my eyes,
the eyes, the eyes, the eyes, not around
the eyes, don't look around the eyes,
look into my eyes, you're under.
>>> print(textwrap.fill(s, 40, initial_indent=' '))
	Look into my eyes, look into my
eyes, the eyes, the eyes, the eyes, not
around the eyes, don't look around the
eyes, look into my eyes, you're under.
>>> print(textwrap.fill(s, 40, subsequent_indent=' '))
Look into my eyes, look into my eyes,
the eyes, the eyes, the eyes, not
around the eyes, don't look around
the eyes, look into my eyes, you're
under.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

# 讨论

textwrap 模块对于字符串打印是非常有用的，特别是当你希望输出自动匹配终端大小的时候。你可以使用 os.get_terminal_size() 方法来获取终端的大小尺寸。比如：

>>> import os
>>> os.get_terminal_size().columns
80
>>>

1
2
3
4

fill() 方法接受一些其他可选参数来控制 tab，语句结尾等。参阅 tex-twrap.TextWrapper (opens new window) 文档获取更多内容。

编辑

上次更新: 2023/10/13, 17:39:25

← 字符串中插入变量在字符串中处理html和xml→