U MZfh@sxdZddlmZddlZddlZddlZddlmZddl Z ddl m Z GdddZ Gdd d Zd d d d dZdS)zE Utility functions and objects for implementing the interchange API. ) annotationsN)DtypeObj)is_datetime64_dtypec@s\eZdZdZdZdZdZdZdZdZ dZ d Z d Z d Z d Zd ZdZdZdZdZdZdZdZdS) ArrowCTypesz Enum for Apache Arrow C type format strings. The Arrow C data interface: https://arrow.apache.org/docs/format/CDataInterface.html#data-type-description-format-strings nbcCsSiIlLefguUZtdDZtdmzts{resolution}:{tz}ztt{resolution}N)__name__ __module__ __qualname____doc__ZNULLZBOOLZINT8ZUINT8ZINT16ZUINT16ZINT32ZUINT32INT64ZUINT64ZFLOAT16ZFLOAT32ZFLOAT64STRINGZ LARGE_STRINGZDATE32ZDATE64 TIMESTAMPZTIMErrA/tmp/pip-unpacked-wheel-nbcvw55c/pandas/core/interchange/utils.pyrs(rc@s eZdZdZdZdZdZdZdS) Endiannessz.Enum indicating the byte-order of a data-type.<>=|N)rrrrZLITTLEZBIGZNATIVEZNArrrrr4s rrstr)dtypereturncCst|tjrtjS|tdkr&tjStt|j d}|dk rD|St |rt dttj|jddd}tjj|ddStd|d dS) a  Represent pandas `dtype` as a format string in Apache Arrow C notation. Parameters ---------- dtype : np.dtype Datatype of pandas DataFrame to represent. Returns ------- str Format string in Apache Arrow C notation of the given `dtype`. ONz\[(.*)\]r) resolutiontzzConversion of z- to Arrow C format string is not implemented.) isinstancepdZCategoricalDtyperrnpr$rgetattrnameupperrrefindalltypingcastr#rformatNotImplementedError)r$Z format_strr)rrrdtype_to_arrow_c_fmt=s $ r7)r __future__rr1r3Znumpyr-Zpandas._typingrZpandasr,Zpandas.api.typesrrrr7rrrrs   "