pandas.timedelta_range(start=None, end=None, periods=None, freq='D', name=None, closed=None)

MultiIndex.is_integer()

DataFrame.groupby(by=None, axis=0, level=None, as_index=True, sort=True, group_keys=True, squeeze=False, **kwargs)

DataFrameGroupBy.rank(axis=0, method='average', numeric_only=None, na_option='keep', ascending=True, pct=False)

DataFrameGroupBy.any(axis=None, bool_only=None, skipna=None, level=None, **kwargs) Return whether any

DatetimeIndex.memory_usage(deep=False)

TimedeltaIndex.difference(other)

Panel.skew(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)

DataFrameGroupBy.cov(min_periods=None) Compute pairwise covariance of columns, excluding NA/null values

DataFrame.query(expr, inplace=False, **kwargs)