Question

I would like to convert an array of int (like this [1, 1, 2, 1]) into a string ("1121").

What’s the best (most pythonic) way to do this?

I could always do something like this then remove the extra brackets:

>>> str([1, 2, 1, 1])
'[1, 2, 1, 1]'

or I can do something like this:

s = ""
for i in [1, 2, 1, 1]:
    s += s(i)

But both methods feel a little shaky. Is there a better way to do it?

For the record, I’m naturally interested in all versions of Python, but I’m working on py2.7 and would prefer answers that work with this version.

Answer 1

A generator expression:

"".join(str(i) for i in l)

PS: your “array” is really a list.