textwrap 笔记

import textwrap
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."""

使用textwrap.wrap()

# 使用textwrap.wrap(s[, width])进行段落划分为list
print(textwrap.wrap(s, width=15)) # 添加'width'属性,以单词为单位(包括字符)最大长度不超过15个字符
"""
D:\笔记\python电子书\Python3>python index.py
['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.']
"""

使用textwrap.fill

# 使用textwrap.fill(s[, width])进行换行显示
print(textwrap.fill(s, width=55)) # 添加"width"属性,表示每一行以单词为单位(包括字符)最大长度不能超过width(55)
"""
D:\笔记\python电子书\Python3>python index.py
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.
"""

使用textwrap.shorten()

# 使用textwrap.shorten(s, width[, placeholder])进行缩略显示
print(textwrap.shorten(s, width=20)) # 表示以单词为单位(包括字符)最长显示width,之后的内容以“[...]”方式缩略显示
print(textwrap.shorten(s, width=20, placeholder='...')) # 使用placeholder改变默认显示的方式" [...]"为"..."
"""
D:\笔记\python电子书\Python3>python index.py
Look into my [...]
"""

对文本内容进行缩进操作

import textwrap
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."""

使用dedent()

# dedent()用来取消缩进,比较下面两个输出即可
print(s)  # 原来定义的s每行前面都有空格
print(textwrap.dedent(s))  # 使用dedent()之后,有一行是顶格的,其它照着往前缩进
"""
D:\笔记\python电子书\Python3>python index.py
     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.
 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.
"""

使用indent()

# indent(s, prefix[, predicate=None])添加缩进
print(s)  # 原来定义的s字符串
print(textwrap.indent(s, '--'))  # 在每一行前面添加"--"
"""
D:\笔记\python电子书\Python3>python index.py
     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.
--     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.
"""