[tips] if as a pure function in python

http://okmij.org/ftp/Scheme/if-function.txt

here is a trick that we could rewrite a customized not-a-special-form IF in python.

iftrick.py:

#!/usr/bin/env python
def func_true():
    print "true!"

def func_false():
    print "false!"

def my_if(my_cond,then_func,else_func):
    eval((then_func, else_func)[not my_cond].func_code,vars())

condition = True

my_if(condition,func_true,func_false)

condition = False

my_if(condition,func_true,func_false)

===
#python iftrick.py 
true!
false!