merge 2 columns in pandas code example

Example 1: plotting two columns of a dataframe in python

df.plot(x='col_name_1', y='col_name_2', style='o')

Example 2: pandas merge two columns from different dataframes

#suppose you have two dataframes df1 and df2, and 
#you need to merge them along the column id
df_merge_col = pd.merge(df1, df2, on='id')

Example 3: join tables pandas

In [99]: result = left.join(right, on=['key1', 'key2'], how='inner')

Example 4: merge two columns pandas

df["period"] = df["Year"] + df["quarter"]

Example 5: join tables pandas

In [88]: result = left.join(right, how='inner')