Series.itemsize return the size of the dtype of the item of the underlying data

Series.iteritems() [source] Lazily iterate over (index, value) tuples

Series.iterkv(*args, **kwargs) [source] iteritems alias used to get around 2to3. Deprecated

Series.is_time_series

Series.is_unique Return boolean if values in the object are unique Returns: is_unique : boolean

Series.item() [source] return the first element of the underlying data as a python scalar

Series.is_monotonic Return boolean if values in the object are monotonic_increasing New in version 0.19.0. Returns: is_monotonic : boolean

Series.is_monotonic_increasing Return boolean if values in the object are monotonic_increasing New in version 0.19.0. Returns: is_monotonic : boolean

Series.is_monotonic_decreasing Return boolean if values in the object are monotonic_decreasing New in version 0.19.0. Returns: is_monotonic_decreasing : boolean

Series.isin(values) [source] Return a boolean Series showing whether each element in the Series is exactly contained in the passed sequence of values. Parameters: values : set or list-like The sequence of values to test. Passing in a single string will raise a TypeError. Instead, turn a single string into a list of one element. New in version 0.18.1. Support for values as a set Returns: isin : Series (bool dtype) Raises: TypeError If values is a string See also pandas.DataFrame.