Unexpected fail: max arg is an empty sequence

[Ivan Necas]

Accidental fail while in practicing words:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/threading.py", line 530, in __bootstrap_inner
    self.run()
  File "./main.py", line 152, in run
    self.main_loop()
  File "./main.py", line 181, in main_loop
    self.gui.show_word_to_type(self.model.get_qwerty_letters_to_type())
  File "/home/inecas/Projects/plover/flyploverfly-reset-stats/fly/models/gamemodel.py", line 180, in get_qwerty_letters_to_type
    self.input_word)
  File "/home/inecas/Projects/plover/flyploverfly-reset-stats/fly/models/keyhighlighting.py", line 52, in get_qwerty_letters_to_type
    real_letters = self.get_real_letters(steno_word)
  File "/home/inecas/Projects/plover/flyploverfly-reset-stats/fly/models/keyhighlighting.py", line 120, in get_real_letters
    previous_letter_order)
  File "/home/inecas/Projects/plover/flyploverfly-reset-stats/fly/models/keyhighlighting.py", line 156, in __pick_side
    return letters_right, max(right_ordering)
ValueError: max() arg is an empty sequence

[Ivan Necas (necasik)]

chord-word to reproduce:

{"-9Z": "900"}

[Pragma Nolint (pragma-nolint)]

Thanks for the report.

The problem is that numbers in the chords presented for users to type is not supported in Fly, but I neglected to remove them from the dict in the post 0.0.1 Fly development update (which included a dictionary upgrade from plover 2.2.0). That's been remedied so revision 15 and later shouldn't show that problem.