python - 如何缩进多行字符串的内容？

Question

我正在使用 python cog生成 C++ 样板代码的模块，到目前为止它工作得很好，但我唯一担心的是，生成的代码本身很丑陋，因为它没有缩进，所以变得更糟。我懒得在字符串生成函数中正确缩进，所以想知道是否有Python util函数可以缩进多行字符串的内容？

Answer 1

您可以通过使用适当数量的填充字符填充每个行来缩进字符串中的行。这可以通过使用 textwrap.indent() 轻松完成。在 Python 3.3 中添加到模块中的函数。或者，您可以使用下面的代码，该代码也适用于早期的 Python 版本。

try:
    import textwrap
    textwrap.indent
except AttributeError:  # undefined function (wasn't added until Python 3.3)
    def indent(text, amount, ch=' '):
        padding = amount * ch
        return ''.join(padding+line for line in text.splitlines(True))
else:
    def indent(text, amount, ch=' '):
        return textwrap.indent(text, amount * ch)

text = '''\
And the Lord God said unto the serpent,
Because thou hast done this, thou art
cursed above all cattle, and above every
beast of the field; upon thy belly shalt
thou go, and dust shalt thou eat all the
days of thy life: And I will put enmity
between thee and the woman, and between
thy seed and her seed; it shall bruise
thy head, and thou shalt bruise his
heel.

3:15-King James
'''

print('Text indented 4 spaces:\n')
print(indent(text, 4))

结果:

Text indented 4 spaces:

    And the Lord God said unto the serpent,
    Because thou hast done this, thou art
    cursed above all cattle, and above every
    beast of the field; upon thy belly shalt
    thou go, and dust shalt thou eat all the
    days of thy life: And I will put enmity
    between thee and the woman, and between
    thy seed and her seed; it shall bruise
    thy head, and thou shalt bruise his
    heel.

    3:15-King James