The value specified in this argument represents either a column position or a row position in the dataframe. Syntax to change column names in pandas dataframe explained with example. This argument represents the column or the axis upon which the Rename() function needs to be applied on. Learn to rename columns in pandas dataframe with an easy to understand tutorial. So every rename values which are mentioned here will be applied to the column names of the dataframe. This is again an another alternative to the argument axis ( mapper, axis=1 ), Here columns as the name suggest it represents the columns of the dataframe. So every rename values which are mentioned here will be applied to the rows of the dataframe. This is an alternative to the argument axis ( mapper, axis=0 ), Here Index represents the rows of the dataframe. The description of this argument is explained below separately. The axis argument here mentions whether the change is for the column or the index. When using the Mapper argument it needs to be combined with the axis argument. The above dictionary when passed in the rename function it implies that the value ‘A’ in either the column or the index needs to be replaced as Header1 and similarly the column or index with value ‘B’ needs to be replaced with the new value ‘Header2’. The mapper argument usually takes values in the form of a dictionary. The mapper holds the values which needs to be replaced and their replacement values, So the old value and the corresponding new value which needs to be replaced will be specified here. Web development, programming languages, Software testing & others DataFrame.rename(self, mapper=None, index=None, columns=None, axis=None, copy=True, inplace=False, level=None, errors='ignore') Parameter & Description of Pandas DataFrame.rename()īelow are the parameters of Pandas DataFrame.rename() in Python: Parameter Furthermore, don’t forget to subscribe to my email newsletter in order to receive updates on new tutorials.Start Your Free Software Development Course Don’t hesitate to let me know in the comments section below, if you have further comments or questions. In this article, I have explained how to modify the name of a pandas DataFrame column by index in Python programming. Basic Course for the pandas Library in Python.Get Index of Column in pandas DataFrame in Python.This method allows you to specify a new name for one or more columns.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |