constraints.py 文件源码

def pandas_tdda_type(x):
     dt = getattr(x, 'dtype', None)
     if type(x) == str or dt == np.dtype('O'):
         return 'string'
     dts = str(dt)
     if type(x) == bool or 'bool' in dts:
         return 'bool'
     if type(x) in (int, long) or 'int' in dts:
         return 'int'
     if type(x) == float or 'float' in dts:
         return 'real'
     if (type(x) == datetime.datetime or 'datetime' in dts
                 or type(x) == pandas_Timestamp):
         return 'date'
     if x is None or (not isinstance(x, pd.core.series.Series)
                      and pd.isnull(x)):
         return 'null'
     # Everything else is other, for now, including compound types,
     # unicode in Python2, bytes in Python3 etc.
     return 'other'