Question

It’s my first Python program and my first excercise is that I just need to swap places in a tuple:

stamboom = [("Frans","Eefje"), ("Klaar","Eefje"), ("Eefje","Mattho"),
            ("Eefje","Salammbo"), ("Gustave","Mattho"), ("Gustave","Salambo")]

Is the tuple, and I need to swap Frans with Eefje (those are just names) and then swap the second tuple.

I read the whole data structure tutorial off Python and I thought I could do this like this:

#!/path/to/python

stamboom = [("Frans","Eefje"), ("Klaar","Eefje"), ("Eefje","Mattho"),
            ("Eefje","Salammbo"), ("Gustave","Mattho"), ("Gustave","Salambo")]

def switchplace(x): 
    stamboom[x], stamboom[x + 1] = stamboom[x + 1], stamboom[x]
    return stamboom

map(switchplace, range(0, len(stamboom)))

It doens’t give syntax errors but it doesn’t show anything.

Answer 1

To show something you have to print it.

Change the last line to:

print map(switchplace,range(0,len(stamboom)))