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TypeError: 'int' object is not subscriptable #14

Open ruimmpires opened 5 years ago

ruimmpires commented 5 years ago

the code works fine! However I am a newbie and tried to make editing the training data a bit more easy so I've created a file training_data.data as: Green,3,Apple Yellow,3,Apple Red,1,Grape Red,1,Grape Yellow,3,Lemon and then import this with: import pandas as pd training_data = pd.read_csv('training_data.data', header=-1)

and now I gut the error TypeError: 'int' object is not subscriptable.

ruimmpires commented 5 years ago

also tried to force the dimension to be integer, but now get many weird errors: training_data = pd.read_csv('training_data.data', dtype={"diameter": np.int32}) header = training_data.columns

The training_data.data is now: "color","diameter","label" 'Green',3,'Apple' 'Yellow',3,Apple' 'Red',1,'Grape' 'Red',1,'Grape' 'Yellow',3,'Lemon'

Traceback (most recent call last): File "/home/rpires/.local/lib/python3.7/site-packages/pandas/core/indexes/base.py", line 2656, in get_loc return self._engine.get_loc(key) File "pandas/_libs/index.pyx", line 108, in pandas._libs.index.IndexEngine.get_loc File "pandas/_libs/index.pyx", line 132, in pandas._libs.index.IndexEngine.get_loc File "pandas/_libs/hashtable_class_helper.pxi", line 1601, in pandas._libs.hashtable.PyObjectHashTable.get_item File "pandas/_libs/hashtable_class_helper.pxi", line 1608, in pandas._libs.hashtable.PyObjectHashTable.get_item KeyError: 0

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "decision_tree_withCSVdata.py", line 410, in my_tree = build_tree(training_data) File "decision_tree_withCSVdata.py", line 318, in build_tree gain, question = find_best_split(rows) File "decision_tree_withCSVdata.py", line 247, in find_best_split n_features = len(rows[0]) - 1 # number of columns File "/home/rpires/.local/lib/python3.7/site-packages/pandas/core/frame.py", line 2927, in getitem indexer = self.columns.get_loc(key) File "/home/rpires/.local/lib/python3.7/site-packages/pandas/core/indexes/base.py", line 2658, in get_loc return self._engine.get_loc(self._maybe_cast_indexer(key)) File "pandas/_libs/index.pyx", line 108, in pandas._libs.index.IndexEngine.get_loc File "pandas/_libs/index.pyx", line 132, in pandas._libs.index.IndexEngine.get_loc File "pandas/_libs/hashtable_class_helper.pxi", line 1601, in pandas._libs.hashtable.PyObjectHashTable.get_item File "pandas/_libs/hashtable_class_helper.pxi", line 1608, in pandas._libs.hashtable.PyObjectHashTable.get_item KeyError: 0