Python将unicode字符转换为html代码和unicode号

Question

Here is what I ultimately want:

A dictionary that holds unicode chars as keys and html code + unicode number as list values.

Basic_Latin = {
        ...
        "@": ["U+0040", "@"],
        ...
        }

How can this be achieved if only the key is given?

I think of something like this:

Basic_Latin = {
        ...
        "@": [to_unicode(@), to_html(@)],
        ...
        }

If find a lot of methods for converting the other way round, but not for what I am looking for.

Answer 1

All that the notations contain is the hexadecimal and decimal value for the Unicode codepoint of the character. That value can easily be obtained by using the ord() function , then formatting the resulting integer:

codepoint = ord('@')
unicode_codepoint = 'U+{:04X}'.format(codepoint)  # four-digit uppercase hex
html_escape = '&#{:d};'.format(codepoint)         # decimal number

or as a function:

def codepoints(c):
    codepoint = ord(c)
    return ('U+{:04X}'.format(codepoint), '&#{:d};'.format(codepoint))

The function returns a tuple rather than a list; presumably this doesn't need to be mutable after all. You probably want to consider using a namedtuple class so you can also use attribute access.

Demo:

>>> def codepoints(c):
...     codepoint = ord(c)
...     return ('U+{:04X}'.format(codepoint), '&#{:d};'.format(codepoint))
...
>>> codepoints('@')
('U+0040', '@')