Python: How to not print comma in last element in a for loop?

Question

My code iterates over a set and print actor's names:

for actor in actorsByMovies():
    print actor+",",

The result looks like:

Brad Pitt, George Clooney,

But I want it to detect the last element so that it won't print the last comma. The result should be instead:

Brad Pitt, George Clooney

How can I do that?

Answer 1

print(', '.join(actorsByMovies()))

Answer 2

The solution by @jamylak is best whenever you can use it, but if you have to keep the loop for other things, you might do something like this:

from __future__ import print_function # Python [2.6, 3)

for index, actor in enumerate(actorsByMovies()):
    if index > 0:
        print(', ', end='')
    print(actor, end='')

Using the same new print function, you could do this instead of using str.join :

print(*actorsByMovies(), sep=', ')

Answer 3

#we can directly use this method in for loop.

 x=''
 y=''            #some empty string we want to concatenate(add) the list strings to.
for iterator in list:                #Some list we will be parsing.
     x = x + iterator        # adding value to string available.
     x=x +', '               # adding , and space 
     y= x[:-2]              # as string is immutable adding value of x in y without comma.
   
return y                 # it will return the desired output.