Python | Pandas Index.copy()
Last Updated :
12 Jan, 2022
Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier.
Pandas Index.copy()
function make a copy of this object. The function also sets the name and dtype attribute of the new object as that of original object. If we wish to have a different datatype for the new object then we can do that by setting the dtype attribute of the function.
Syntax: Index.copy(name=None, deep=False, dtype=None, **kwargs)
Parameters :
name : string, optional
deep : boolean, default False
dtype : numpy dtype or pandas type
Returns : copy : Index
Note : In most cases, there should be no functional difference from using deep, but if deep is passed it will attempt to deepcopy.
Example #1: Use Index.copy()
function to copy the Index value to a new object and change the datatype of new object to ‘int64’
Python3
import pandas as pd
idx = pd.Index([ 17.3 , 69.221 , 33.1 , 15.5 , 19.3 , 74.8 , 10 , 5.5 ])
idx
|
Output :
Let’s create a copy of the object having ‘int64’ data type.
Output :
As we can see in the output, the function has returned a copy of the original Index with ‘int64’ dtype.
Example #2: Use Index.copy()
function to make a copy of the original object. Also set the name attribute of the new object and convert the string dtype into ‘datetime’ type.
Python3
import pandas as pd
idx = pd.Index([ '2015-10-31' , '2015-12-02' , '2016-01-03' ,
'2016-02-08' , '2017-05-05' ])
idx
|
Output :
Let’s make a copy of the original object.
Python3
idx_copy = idx.copy(dtype = 'datetime64' )
idx_copy
|
Output :
As we can see in the output, the new object has the data in datetime format and its name attribute has also been set.
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