how to sort data with respect to one coloumn in pandas when we dont have coloumn name code example

Example 1: python sort dataframe by one column

#following is example of sorting by the column "2" in descending order
final_df = df.sort_values(by=['2'], ascending=False)

Example 2: pandas order dataframe by column of other dataframe

df1 = df1.set_index('column_in_df1')
df1 = df1.reindex(index=df2['column_in_df2'])
df1 = df1.reset_index()