How to convert strings into integers in Python?

Question

I have a tuple of tuples from a MySQL query like this:

T1 = ((\'13\', \'17\', \'18\', \'21\', \'32\'),
      (\'07\', \'11\', \'13\', \'14\', \'28\'),
               


        

Answer 1

int() is the Python standard built-in function to convert a string into an integer value. You call it with a string containing a number as the argument, and it returns the number converted to an integer:

print (int("1") + 1)

The above prints 2.

If you know the structure of your list, T1 (that it simply contains lists, only one level), you could do this in Python 2:

T2 = [map(int, x) for x in T1]

In Python 3:

T2 = [list(map(int, x)) for x in T1]