Change the order of index of a series in Pandas Last Updated : 15 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Suppose we want to change the order of the index of series, then we have to use the Series.reindex() Method of pandas module for performing this task. Series, which is a 1-D labeled array capable of holding any data. Syntax: pandas.Series(data, index, dtype, copy) Parameters: data takes ndarrys, list, constants.index values.dtypes for data types.Copy data, default is False. For knowing more about the pandas Series click here. Series.reindex() Method is used for changing the data on the basis of indexes. Syntax: Series.reindex(labels=None, index=None, columns=None, axis=None, method=None, copy=True, level=None, fill_value=nan, limit=None, tolerance=None) For knowing more about the pandas Series.reindex() method click here. Let's create a series: Python3 # import required library import pandas as pd import numpy as np # create numpy array data = np.array(["Android dev", "content writing", "competitive coding"]) #create a series total_series = pd.Series(data, index = [1, 2, 3]) # show the series total_series Output: Series Example 1: Python3 # import required library import pandas as pd import numpy as np # create numpy array data = np.array(["Android dev", "content writing", "competitive coding"]) # create a series total_series = pd.Series(data, index = [1, 2, 3]) # reindexing of series total_series = total_series.reindex(index = [3, 2, 1]) # show the series total_series Output: Example 2: Python3 # import required library import pandas as pd import numpy as np # create numpy array data = np.array(["Android dev", "content writing", "competitive coding"]) # create a series total_series = pd.Series(data, index = [1, 2, 3]) # reindexing of series total_series = total_series.reindex([2, 3, 1]) # show the series total_series Output: Create Quiz Comment S shiv_ka_ansh Follow 0 Improve S shiv_ka_ansh Follow 0 Improve Article Tags : Python Python-pandas Python pandas-series Python pandas-series-methods Explore Python FundamentalsPython Introduction 2 min read Input and Output in Python 4 min read Python Variables 4 min read Python Operators 4 min read Python Keywords 2 min read Python Data Types 8 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 5 min read Python Functions 5 min read Recursion in Python 4 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 4 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 10 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 4 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library - Tutorial 3 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 6 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 5 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 1 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like