define a column as index pandas
myDataFrame.set_index('column_name')
define a column as index pandas
myDataFrame.set_index('column_name')
set index to column pandas
df = df.set_index('col') df['col'] = df.index
change name of column pandas
#df.rename() will only return a new df with the new headers #df = df.rename() will change the heders of the current dataframe df = df.rename(columns={"old_col1": "new_col1", "old_col2": "new_col2"})
set column as index
>>> df = df.set_index('Identifier') >>> df.head() Place of Publication Date of Publication 206 London 1879 [1878] 216 London; Virtue & Yorston 1868 218 London 1869 472 London 1851 480 London 1857 Publisher 206 S. Tinsley & Co. 216 Virtue & Co. 218 Bradbury, Evans & Co. 472 James Darling 480 Wertheim & Macintosh Title Author 206 Walter Forbes. [A novel.] By A. A A. A. 216 All for Greed. [A novel. The dedication signed... A., A. A. 218 Love the Avenger. By the author of “All for Gr... A., A. A. 472 Welsh Sketches, chiefly ecclesiastical, to the... A., E. S. 480 [The World in which I live, and my place in it... A., E. S. Flickr URL 206 http://www.flickr.com/photos/britishlibrary/ta... 216 http://www.flickr.com/photos/britishlibrary/ta... 218 http://www.flickr.com/photos/britishlibrary/ta... 472 http://www.flickr.com/photos/britishlibrary/ta... 480 http://www.flickr.com/photos/britishlibrary/ta...
how to change index in dataframe python
index = [1,2] df.index = index
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