Co-routines

[Michele Simionato]

If really you want to play tricks with the source code, as Micheal
Spark is suggesting, you can avoid generators all togheter and 
"merge" the two functions by hand:

import inspect
def f1():
    print "1-1"
    print "1-2"
    print "1-3"

def f2():
    print "2-1"
    print "2-2"
    print "3-3"

def merge(f1,f2):
    s1=inspect.getsource(f1).splitlines()[1:]
    s2=inspect.getsource(f2).splitlines()[1:]
    lines=['def mergedfunction():\n']
    for line1,line2 in zip(s1,s2):
        lines.append(line1+'\n')
        lines.append(line2+'\n')
    dic={}; exec ''.join(lines) in dic
    return dic['mergedfunction']

f=merge(f1,f2)
f()
 
Output:
1-1
2-1
1-2
2-2
1-3
3-3

Exercise left for the reader: show the pittfalls of this approach.


               Michele