fix: fix failing test when crypt is missing. In 3.13 crypt is gone and there is no replacement as it's supplied by a .so as _crypt. Don't hardcode the crypt method in the array, add it (next to last) only if crypt was detected.

try:
    # Python 2.
    my_input = raw_input
except NameError:
    # Python 3+.
    my_input = input