Question

How can I print lists without brackets and commas?

I have a list of permutations like this:

   [1, 2, 3]
   [1, 3, 2] etc.. 

I want to print them like this: 1 2 3

Answer 1

blah = [ [1,2,3], [1,3,2] ]

for bla in blah:
    print ' '.join(map(str, bla))

It’s worth noting that map is a bit old-fashioned and is better written as either a generator or list-comp depending on requirements. This also has the advantage that it’ll be portable across Python 2.x & 3.x as it’ll generate a list on 2.x, while remain lazy on 3.x

So, the above would be written (using a generator expression) as:

for bla in blah:
    print ' '.join(str(n) for n in bla)

Or using string formatting:

for bla in blah:
    print '{} {} {}'.format(*bla)