词法规则

3 345 0xff 0xBEBADA

3.0 3.1416 314.16e-2 0.31416E1 34e1

0x0.1E 0xA23p-4 0X1.921FB54442D18P+1

比如:

a = 'alo\n123"'
a = "alo\n123\""
a = '\97lo\10\04923"'
a = [[alo
123"]]
a = [==[
alo
123"]==]