merge two columns pandas code example

Example 1: merge two dataframes based on column

df_outer = pd.merge(df1, df2, on='id', how='outer')

df_outer

Example 2: python merge strings in columns

df["period"] = df["Year"].astype(str) + df["quarter"]

Example 3: combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])

Example 4: 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 5: merge two columns name in one header pandas

df['A'] = df[a_cols].apply(' '.join, axis=1)

Example 6: merge two columns pandas

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