1. Import & Ready import numpy as np import pandas as pd emp = pd.DataFrame({'num': [1, 2, 3, 4, 5], 'name': ['smith', 'kali', 'timo', 'echo', 'shco'], 'deptno': [10, 10, 20, 20, 50], 'salary': [1000, 2000, 4000, 5000, 10000]}) dept = pd.DataFrame({'deptno': [10, 20, 30, 50], 'deptname': ['Marketing', 'R&D', 'Software', 'Analytics']}) 2. Merge * pd.merge(DataFrame1, DataFrame2, on = 칼럼명) * pd.me..