Allowed characters in Python function names
除了字母、数字和下划线之外，python函数名中还有其他允许的字符吗？如果是，它们是什么？
不在python 2.x中。来自文档：
1 2 3 4 5 | identifier ::= (letter|"_") (letter | digit |"_")* letter ::= lowercase | uppercase lowercase ::= "a"..."z" uppercase ::= "A"..."Z" digit ::= "0"..."9" |
在python 3中，它被扩展：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | identifier ::= xid_start xid_continue* id_start ::= <all characters in general categories Lu, Ll, Lt, Lm, Lo, Nl, the underscore, and characters with the Other_ID_Start property> id_continue ::= <all characters in id_start, plus characters in the categories Mn, Mc, Nd, Pc and others with the Other_ID_Continue property> xid_start ::= <all characters in id_start whose NFKC normalization is in"id_start xid_continue*"> xid_continue ::= <all characters in id_continue whose NFKC normalization is in"id_continue*"> The Unicode category codes mentioned above stand for: Lu - uppercase letters Ll - lowercase letters Lt - titlecase letters Lm - modifier letters Lo - other letters Nl - letter numbers Mn - nonspacing marks Mc - spacing combining marks Nd - decimal numbers Pc - connector punctuations Other_ID_Start - explicit list of characters in PropList.txt to support backwards compatibility Other_ID_Continue - likewise |