Recently, I have been reading about the Python source code encoding, especially PEP 263 and PEP 3120.
I have the following code:
# coding:utf-8
s = 'abc∂´ƒ©'
ƒ = 'My name is'
ß = '˚ß˙ˆ†ˆ∆ ßå®åø©ˆ'
print('s =', s)
print('ƒ =', ƒ, 'ß =', ß)
This code works fine for Python3 but results in a SyntaxError in Python2.7 .
I do understand that this probably might have nothing to do with source code encoding.
So, I would like to know if there is a way to support Unicode variable names in Python2.
In all, I am also having a hard time figuring out what pragmatic problem the PEPs exactly aim to solve and how(and where) do I take advantage of the proposed solutions. I have read few discussions on the same but they do not present an answer to my question rather an explanation of the correct syntax:
No, Python 2 only supports ASCII names. From the language reference:
identifier ::= (letter|”_”) (letter | digit | “_”)*
letter ::= lowercase | uppercase
lowercase ::= “a”…”z”
uppercase ::= “A”…”Z”
digit ::= “0”…”9”
Compared that the much longer Python 3 version, which does have full Unicode names.
The practical problem the PEPs solve is that before, if a byte over 127 appeared in a source file (say inside a unicode string), then Python had no way of knowing which character was meant by that as it could have been any encoding. Now it's interpreted as UTF-8 by default, and can be changed by adding such a header.
I don't think that those two articles are about encoding in the sense of your variable name being a Beta-symbol for example, but regarding the encoding in the variable value.
so if you change your code to this example:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
a = 'abc?´ƒ©'
b = 'My name is'
c = '°ß?ˆ†ˆ? ßå®åø©ˆ'
print 'a =', a # by the way, the brackets are only used in python 3, so they are also being displayed when running the code in python 2.7
print 'b =', b, 'c =', c
Hope that answers your question
Greetings Frame
来源：https://stackoverflow.com/questions/46001437/defining-unicode-variables-in-python