Answers for "pandas concat two dataframe columns"

pandas concat / merge two dataframe within one dataframe

In [9]: result = pd.concat([df1, df4], axis=1)

merge two columns pandas

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

concat 3 column in pandas

In[17]:df['combined']=df['bar'].astype(str)+'_'+df['foo']+'_'+df['new']

In[17]:df
Out[18]: 
   bar foo     new    combined
0    1   a   apple   1_a_apple
1    2   b  banana  2_b_banana
2    3   c    pear    3_c_pear