pandas join series to dataframe on index code example
Example 1: how to merge two dataframes
df_merge_col = pd.merge(df_row, df3, on='id')
df_merge_colExample 2: dataframe concatenate
# Pandas for Python
df['col1 & col2'] = df['col1']+df['col2']
#Output
#col1 col2 col1 & col2
#A1 A2 A1A2
#B1 B2 B1B2