The Python Apprentice

Fixing the bug

After you're out of PDB, let's remove the set_trace() call and modify digits() to fix the problem we found:

def digits(x):    """Convert an integer into a list of digits.    Args:      x: The number whose digits we want.    Returns: A list of the digits, in order, of ``x``.    >>> digits(4586378)    [4, 5, 8, 6, 3, 7, 8]    """    digs = []    while x != 0:        div, mod = divmod(x, 10)        digs.append(mod)        x = div    return digs

If we run our program now, we see that we're passing all tests, and it runs very quickly:

$ python palindrome.py...----------------------------------------------------------------------Ran 3 tests in 0.001sOK

So that's a basic PDB session, and it demonstrates some of the core features of PDB. PDB has many other commands and features, however, ...