Convert a list of integers to string

There's definitely a slicker way to do this, but here's a very straight forward way:

mystring = ""

for digit in new:
    mystring += str(digit)

Coming a bit late and somehow extending the question, but you could leverage the array module and use:

from array import array

array('B', new).tobytes()

b'\n\t\x05\x00\x06\x05'

In practice, it creates an array of 1-byte wide integers (argument 'B') from your list of integers. The array is then converted to a string as a binary data structure, so the output won't look as you expect (you can fix this point with decode()). Yet, it should be one of the fastest integer-to-string conversion methods and it should save some memory. See also documentation and related questions:

https://www.python.org/doc/essays/list2str/

https://docs.python.org/3/library/array.html#module-array

Converting integer to string in Python?

With Convert a list of characters into a string you can just do

''.join(map(str,new))

two simple ways of doing this

"".join(map(str, A))
"".join([str(a) for a in A])