如何获得字符串中的字符在 python？

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>>> u"\u00b0"
u'\xb0'
>>> print _
°

BTW, all I did was search "unicode degree" on Google. This brings up two results: "Degree sign U+00B0" and "Degree Celsius U+2103", which are actually different:

>>> u"\u2103"
u'\u2103'
>>> print _
℃

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最佳答案

Put this line at the top of your source

# -*- coding: utf-8 -*-

If your editor uses a different encoding, substitute for utf-8

Then you can include utf-8 characters directly in the source

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This is the most coder-friendly version of specifying a Unicode character:

degree_sign = u'\N{DEGREE SIGN}'

Escape Sequence: \N{name}

Meaning: Character named name in the Unicode database

Reference: https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals

Note:

"N" must be uppercase in the \N construct to avoid confusion with the \n newline character
The character name inside the curly braces can be any case

It's easier to remember the name of a character than its Unicode index. It's also more readable, ergo debugging-friendly. The character substitution happens at compile time, i.e. the .py[co] file will contain a constant for u'°':

>>> import dis
>>> c= compile('u"\N{DEGREE SIGN}"', '', 'eval')
>>> dis.dis(c)
1           0 LOAD_CONST               0 (u'\xb0')
3 RETURN_VALUE
>>> c.co_consts
(u'\xb0',)
>>> c= compile('u"\N{DEGREE SIGN}-\N{EMPTY SET}"', '', 'eval')
>>> c.co_consts
(u'\xb0-\u2205',)
>>> print c.co_consts[0]
°-∅

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just use \xb0 (in a string); python will convert it automatically

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Above answers assume that UTF8 encoding can safely be used - this one is specifically targetted for Windows.

The Windows console normaly uses CP850 encoding and not utf-8, so if you try to use a source file utf8-encoded, you get those 2 (incorrect) characters ┬░ instead of a degree °.

Demonstration (using python 2.7 in a windows console):

deg = u'\xb0`  # utf code for degree
print deg.encode('utf8')

effectively outputs ┬░.

Fix: just force the correct encoding (or better use unicode):

local_encoding = 'cp850'    # adapt for other encodings
deg = u'\xb0'.encode(local_encoding)
print deg

or if you use a source file that explicitely defines an encoding:

# -*- coding: utf-8 -*-
local_encoding = 'cp850'  # adapt for other encodings
print " The current temperature in the country/city you've entered is " + temp_in_county_or_city + "°C.".decode('utf8').encode(local_encoding)

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You can also use chr(176) to print the degree sign. Here is an example using python 3.6.5 interactive shell:

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Using python f-string, f"{var}", you can use:

theta = 45
print(f"Theta {theta}\N{DEGREE SIGN}.")

Output: Theta 45°.

*improving tzot answer