[Tutor] 42

[Christian Wyglendowski]

> -----Original Message-----
> What is the most convincing way to mimick this in Python?
> 
> #include <stdio.h>
> 
> #define SIX 1 + 5
> #define NINE 8 + 1
> 
> int main(void) {
>   printf("What do you get if you multiply six by nine: %d\n", SIX *
> 	NINE);
>   return 0;
> }
> 

Don't know how convincing it is, but here is my idea:

class define:
... 	def __init__(self, strnumexpr):
... 		self.val = strnumexpr
... 	def __mul__(self, x):
... 		answer = self.val + '*' + x.val
... 		return eval(answer)
... 	def __repr__(self):
... 		return str(eval(self.val))
... 	
>>> SIX = define('1 + 5')
>>> NINE = define('8 + 1')
>>> SIX
6
>>> NINE
9
>>> SIX * NINE
42

You could hide the define class in a module which might make it more
convincing...

>>> from hhgtg import define
>>> SIX = define('1 + 5')
>>> NINE = define('8 + 1')
>>> SIX
6
>>> NINE
9
>>> SIX * NINE
42

Christian
http://www.dowski.com