On 2014-03-25 18:30, Mark H Harris wrote:
greetings, I would like to create a lamda as follows:√ = lambda n: sqrt(n) On my keyboard mapping the "problem" character is alt-v which produces the radical symbol. When trying to set the symbol as a name within the name-space gives a syntax error: >>> from math import sqrt >>> >>> √ = lambda n: sqrt(n) SyntaxError: invalid character in identifier >>> >>> however this works: >>> >>> λ = lambda n: sqrt(n) >>> >>> λ(2) 1.4142135623730951 >>> The question is which unicode(s) are capable of being proper name characters, and which ones are off-limits, and why?
It's explained in PEP 3131. Basically, a name should to start with a letter (this has been extended to include Chinese characters, etc) or an underscore. λ is a classified as Lowercase_Letter. √ is classified as Math_Symbol. -- https://mail.python.org/mailman/listinfo/python-list
