今回は試しに学習させてみたところ、途中でエラーが出て止まってしまった。再帰的に直前の存在する日時インデックスを取得するメソッドにバグがあったので、この機会にもっとシンプルな実装へ変更した。
（前略） [2017-04-01 15:05:29,613] before 2010-09-04T16:01:00.000000+0000 [2017-04-01 15:05:29,613] 2010-09-04T16:01:00.000000+0000 1283616000.0 [2017-04-01 15:05:29,613] 1283616000.0 after [2017-04-01 15:05:29,614] after2010-09-04T16:01:00.000000+0000 [2017-04-01 15:05:29,614] 2010-09-04T16:01:00.000000+0000 1283616060.0 [2017-04-01 15:05:29,614] 1283616060.0 Fatal Python error: Cannot recover from stack overflow. Current thread 0x00007f451c9c2700 (most recent call first): File "/opt/conda/lib/python3.5/site-packages/pandas/core/base.py", line 877 in _values File "/opt/conda/lib/python3.5/site-packages/pandas/indexes/base.py", line 1305 in <lambda> File "/opt/conda/lib/python3.5/site-packages/pandas/indexes/base.py", line 1084 in is_monotonic_increasing File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/frequencies.py", line 755 in __init__ File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/frequencies.py", line 724 in infer_freq File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/base.py", line 303 in inferred_freq File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/index.py", line 1466 in _get_string_slice File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/index.py", line 1414 in get_loc File "/opt/conda/lib/python3.5/site-packages/pandas/tseries/base.py", line 234 in __contains__ File "/opt/conda/lib/python3.5/site-packages/pandas/core/indexing.py", line 1410 in _has_valid_type File "/opt/conda/lib/python3.5/site-packages/pandas/core/indexing.py", line 1482 in _getitem_axis File "/opt/conda/lib/python3.5/site-packages/pandas/core/indexing.py", line 1312 in __getitem__ File "Keras-RL_DQN_FX.py", line 60 in get_last_exist_datetime_recursively File "Keras-RL_DQN_FX.py", line 65 in get_last_exist_datetime_recursively File "Keras-RL_DQN_FX.py", line 65 in get_last_exist_datetime_recursively File "Keras-RL_DQN_FX.py", line 65 in get_last_exist_datetime_recursively File "Keras-RL_DQN_FX.py", line 65 in get_last_exist_datetime_recursively File "Keras-RL_DQN_FX.py", line 65 in get_last_exist_datetime_recursively （後略）
現在の問題点その4
試しに学習させたところ、 HistData.get_last_exist_datetime_recursively() に 2010-09-04T16:01:00 を与えるとスタックオーバーフローで終了するバグがあった。
現在の問題点その4に対する解
もっとシンプルな実装に変更する。
