在python中打印下标 [英] Printing subscript in python

问题描述

在 Python 3.3 中，有没有办法在打印时在字符串下标中制作一部分文本?

例如H₂(H 然后是下标 2)

解决方案

如果你只关心数字，你可以使用 str.maketrans() 和 str.translate() 方法:

<预><代码>>>>SUB = str.maketrans("0123456789", "₀₁₂₃₄₅₆₇₈₉")>>>SUP = str.maketrans("0123456789", "⁰¹²³⁴⁵⁶⁷⁸⁹")>>>"H2SO4".translate(SUB)'H₂SO₄'

请注意，这在 Python 2 中不起作用 - 请参阅 Python 2 maketrans() 函数不适用于 Unicode解释为什么会这样，以及如何解决它.

In Python 3.3, is there any way to make a part of text in a string subscript when printed?

e.g. H₂ (H and then a subscript 2)

解决方案

If all you care about are digits, you can use the str.maketrans() and str.translate() methods:

>>> SUB = str.maketrans("0123456789", "₀₁₂₃₄₅₆₇₈₉")
>>> SUP = str.maketrans("0123456789", "⁰¹²³⁴⁵⁶⁷⁸⁹")
>>> "H2SO4".translate(SUB)
'H₂SO₄'

Note that this won't work in Python 2 - see Python 2 maketrans() function doesn't work with Unicode for an explanation of why that's the case, and how to work around it.

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