Error Chapter2\seasonality.py

[MBSCaesar]

Chapter2\seasonality.py

Traceback (most recent call last):
File "C:\Python310\lib\site-packages\pandas\core\indexes\base.py", line 3803, in get_loc
return self._engine.get_loc(casted_key)
File "pandas_libs\index.pyx", line 138, in pandas._libs.index.IndexEngine.get_loc
File "pandas_libs\index.pyx", line 165, in pandas._libs.index.IndexEngine.get_loc
File "pandas_libs\hashtable_class_helper.pxi", line 2263, in pandas._libs.hashtable.Int64HashTable.get_item
File "pandas_libs\hashtable_class_helper.pxi", line 2273, in pandas._libs.hashtable.Int64HashTable.get_item
KeyError: 0

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "c:*\Workspace\learn-algorithmic-trading\Chapter2\seasonality.py", line 26, in
'monthly_return': goog_monthly_return[i]})
File "C:\Python310\lib\site-packages\pandas\core\series.py", line 981, in getitem
return self._get_value(key)
File "C:\Python310\lib\site-packages\pandas\core\series.py", line 1089, in _get_value
loc = self.index.get_loc(label)
File "C:\Python310\lib\site-packages\pandas\core\indexes\multi.py", line 2916, in get_loc
loc = self._get_level_indexer(key, level=0)
File "C:\Python310\lib\site-packages\pandas\core\indexes\multi.py", line 3263, in _get_level_indexer
idx = self._get_loc_single_level_index(level_index, key)
File "C:\Python310\lib\site-packages\pandas\core\indexes\multi.py", line 2849, in _get_loc_single_level_index
return level_index.get_loc(key)
File "C:\Python310\lib\site-packages\pandas\core\indexes\base.py", line 3805, in get_loc
raise KeyError(key) from err
KeyError: 0

[relentlesss]

Traceback (most recent call last):
File "c:*\Workspace\learn-algorithmic-trading\Chapter2\seasonality.py", line 26, in
'monthly_return': goog_monthly_return[i]})
KeyError: 0

Here you need df.iloc, so replace line 26 with the following:
'monthly_return': goog_monthly_return.iloc[i]})