pandas.RangeIndex#

classpandas.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 representingmonotonic ranges with a 64-bit dtype. Using RangeIndex may in some instancesimprove computing speed.

This is the default index type usedby 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.

Attributes

start	The value of thestart parameter (0 if this was not supplied).
stop	The value of thestop parameter.
step	The value of thestep parameter (1 if this was not supplied).

Methods

from_range(data[, name, dtype])

Createpandas.RangeIndex from arange object.

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))[]