pandas.RangeIndex#
- class pandas.RangeIndex(start=None, stop=None, step=None, dtype=None, copy=False, name=None)[source]#
Immutable Index implementing a monotonic integer range.
RangeIndex is a memory-saving special case of an Index limited to representing monotonic ranges with a 64-bit dtype. Using RangeIndex may in some instances improve computing speed.
This is the default index type used by DataFrame and Series when no explicit index is provided by the user.
- Parameters:
- startint (default: 0), range, or other RangeIndex instance
If int and “stop” is not given, interpreted as “stop” instead.
- stopint (default: 0)
- stepint (default: 1)
- dtypenp.int64
Unused, accepted for homogeneity with other index types.
- copybool, default False
Unused, accepted for homogeneity with other index types.
- nameobject, optional
Name to be stored in the index.
See also
Index
The base pandas Index type.
Examples
>>> list(pd.RangeIndex(5)) [0, 1, 2, 3, 4]
>>> list(pd.RangeIndex(-2, 4)) [-2, -1, 0, 1, 2, 3]
>>> list(pd.RangeIndex(0, 10, 2)) [0, 2, 4, 6, 8]
>>> list(pd.RangeIndex(2, -10, -3)) [2, -1, -4, -7]
>>> list(pd.RangeIndex(0)) []
>>> list(pd.RangeIndex(1, 0)) []
Attributes
The value of the start parameter (
0
if this was not supplied).The value of the stop parameter.
The value of the step parameter (
1
if this was not supplied).Methods
from_range
(data[, name, dtype])Create
pandas.RangeIndex
from arange
object.