```
Traceback (most recent call last):
File "xyz\xxx\yyy.py", line 89, in <module>
page.put(page_text, summary)
File "xyz\pywikibot-core\pywikibot\tools\__init__.py", line 1105, in wrapper
return obj(*__args, **__kw)
File "xyz\pywikibot-core\pywikibot\page.py", line 1144, in put
**kwargs)
File "xyz\pywikibot-core\pywikibot\tools\__init__.py", line 1105, in wrapper
return obj(*__args, **__kw)
File "xyz\pywikibot-core\pywikibot\page.py", line 1062, in save
cc=apply_cosmetic_changes, **kwargs)
File "xyz\pywikibot-core\pywikibot\page.py", line 1070, in _save
summary = self._cosmetic_changes_hook(summary) or summary
File "xyz\pywikibot-core\pywikibot\page.py", line 1120, in _cosmetic_changes_hook
self.text = ccToolkit.change(old)
File "xyz\pywikibot-core\pywikibot\cosmetic_changes.py", line 279, in change
new_text = self._change(text)
File "xyz\pywikibot-core\pywikibot\cosmetic_changes.py", line 273, in _change
text = self.safe_execute(method, text)
File "xyz\pywikibot-core\pywikibot\cosmetic_changes.py", line 260, in safe_execute
result = method(text)
File "xyz\pywikibot-core\pywikibot\cosmetic_changes.py", line 849, in fixArabicLetters
old = digits[digits.keys()[0]]
TypeError: 'dict_keys' object does not support indexing
```
In Python 3 the `dict.keys()` method returns a [[ https://docs.python.org/3/library/stdtypes.html#dictionary-view-objects | dictionary view object ]], which does not have a `keys` method.