【发布时间】:2019-03-02 05:27:03
【问题描述】:
我正在运行一个时间序列模型,为了得到预测,我得到了错误
TypeError: int() 参数必须是字符串、类似字节的对象或数字,而不是“时间戳”
输入代码:
pred = results.get_prediction(start=pd.to_datetime("2018-09-01"), dynamic=False)
输出:
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-41-f3c669d7c5dd> in <module>()
----> 1 pred = results.get_prediction(start=pd.to_datetime("2018-09-01"), dynamic=False)
/anaconda3/lib/python3.6/site-packages/statsmodels/tsa/statespace/sarimax.py in get_prediction(self, start, end, dynamic, index, exog, **kwargs)
1924 # Handle start, end, dynamic
1925 _start, _end, _out_of_sample, prediction_index = (
-> 1926 self.model._get_prediction_index(start, end, index, silent=True))
1927
1928 # Handle exogenous parameters
/anaconda3/lib/python3.6/site-packages/statsmodels/tsa/base/tsa_model.py in _get_prediction_index(self, start, end, index, silent)
475 # indexes.
476 try:
--> 477 start, start_index, start_oos = self._get_index_label_loc(start)
478 except KeyError:
479 raise KeyError('The `start` argument could not be matched to a'
/anaconda3/lib/python3.6/site-packages/statsmodels/tsa/base/tsa_model.py in _get_index_label_loc(self, key, base_index)
410 try:
411 loc, index, index_was_expanded = (
--> 412 self._get_index_loc(key, base_index))
413 except KeyError as e:
414 try:
/anaconda3/lib/python3.6/site-packages/statsmodels/tsa/base/tsa_model.py in _get_index_loc(self, key, base_index)
351 # RangeIndex)
352 try:
--> 353 index[key]
354 # We want to raise a KeyError in this case, to keep the exception
355 # consistent across index types.
/anaconda3/lib/python3.6/site-packages/pandas/core/indexes/range.py in __getitem__(self, key)
496
497 if is_scalar(key):
--> 498 n = int(key)
499 if n != key:
500 return super_getitem(key)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'Timestamp'
但是当我在虚拟数据集上运行它时,它工作正常,但在我的数据集上。我不知道问题出在哪里。
【问题讨论】:
-
如果你只是删除
pd.to_datetime会发生什么? -
KeyError: '
start参数无法匹配到与数据索引相关的位置。'这是我删除 pd.to_datetime 并将其作为字符串传递时得到的错误。
标签: python time-series forecasting arima