DataFrame.to_json(path_or_buf=None, orient=None, date_format='epoch', double_precision=10, force_ascii=True, date_unit='ms', default_handler=None

TimedeltaIndex.seconds Number of seconds (>= 0 and less than 1 day) for each element.

DatetimeIndex.argmax(axis=None, *args, **kwargs)

DataFrame.swaplevel(i=-2, j=-1, axis=0)

pandas.to_numeric(arg, errors='raise', downcast=None)

MultiIndex.get_loc_level(key, level=0, drop_level=True)

DataFrameGroupBy.mad(axis=None, skipna=None, level=None) Return the mean absolute deviation of the values

GroupBy.aggregate(func, *args, **kwargs)

DataFrame.as_blocks(copy=True)

pandas.merge(left, right, how='inner', on=None, left_on=None, right_on=None, left_index=False, right_index=False, sort=False, suffixes=('_x', '_y')