>>> import numpy as np >>> np.dtype('datetime64[ns]') == np.dtype('<m8[ns]') true. Ufunc true_divide cannot use operands with types dtype('<m8[ns]') and dtype('<m8[ns]') what is this error exactly caused by? But if you really need to convert, just use astype like you would for any other conversion:
However, on a big endian machine, np.dtype('datetime64[ns]') would equal np.dtype('>m8[ns]'). The error seems to occur when running. Cannot cast array data from dtype('<m8[ns]') to dtype('float64') according to the rule 'safe' i attached here my code.
Today i stumbled upon the fact that python wrapper for alpha vantage api (alpha_vantage) uses dtype('<m8[ns]') as data type for the index of dataframe, containing output. When creating an array of datetimes from a string, it is still possible to automatically select the unit from the inputs, by using the datetime type with generic units. And how can i work around it? Numpy arrays with datetime64[ns] can be seamlessly used within pandas dataframes.
<m8[ns] または >m8[ns] は、マシンのエンディアン性に依存します。 一般的なdtypesが特定のdtypesにマッピングされる同様の例は他にもたくさんあります。 int64 は. An array of datetimes can be. On a machine whose byte order is little endian, there is no difference between np.dtype('datetime64[ns]') and np.dtype('<m8[ns]'):