[Tutor] Regular User defined functions Vs Generator functions

[Manprit Singh]

Dear sir ,

I have a question , why not to prefer generator functions instead of
regular user defined functions, where i have problem like as that given
below :

I have to write a function that can return index of each and every
occurrence of substring w in string st1, st1 & w given below:

st1 = "I am a boy, i am an engineer, i am a genius"
w = "am"
If i have to write a function to solve this problem, i feel generator
function is more good( as compared to regular user defined  function), that
i have written below :

def ind_word(st, w):
    n = 0
    while True:
        n = st.find(w, n)
        if n != -1:
            yield n
        else:
            break
        n += 1

st1 = "I am a boy, i am an engineer, i am a genius"
w = "am"
print(*ind_word(st1, w))

will give result
2   14  32

Need your suggestions.

Regards
Manprit Singh