python33个关键字不能用作变量名
False None Ture and as assert
break class continue def del elif
else except finally for from global
if import in nonlocal lambda is
not or pass raise return try
while with yield
python33个关键字不能用作变量名
False None Ture and as assert
break class continue def del elif
else except finally for from global
if import in nonlocal lambda is
not or pass raise return try
while with yield