import ryser

a = ryser.Latin({1:1, 12:3}, 9)

AttributeError                            Traceback (most recent call last)

<ipython-input-11-5e79bc83ef6a> in <module>()
----> 1 a.row_absences(1)

/usr/local/lib/python3.6/dist-packages/ryser/__init__.py in row_absences(self, row_index)
    176         for x in presences:
    177             if x in result:
--> 178                result.remove(x)
    179         return result
    180 

AttributeError: 'range' object has no attribute 'remove'

import ryser

a = ryser.Latin({1:1, 12:3}, 9)
a[1,1]

KeyError                                  Traceback (most recent call last)

<ipython-input-19-73b9fe84793e> in <module>()
----> 1 a[1,1]

/usr/local/lib/python3.6/dist-packages/ryser/__init__.py in __getitem__(self, key)
    153 
    154     def __getitem__(self, key):
--> 155         return self._P[cell(key[0], key[1], self._size)]
    156 
    157     def size(self):

KeyError: 11