아미(아름다운미소)

import pandas as pdimport numpy as np# 샘플 데이터 생성data = { 'a': ['A'] * 6 + ['B'] * 6 + ['C'] * 6, 'b': [10, 15, 10, -20, 5, 10, 25, -30, 5, 20, 15, 10, 10, 15, 20, 25, 30, 35], 'c': [3, 3, 3, 3, 3, 3, -3, -3, -3, -3, -3, -3, 2, 2, 2, 2, 2, 2]}# DataFrame 생성df = pd.DataFrame(data)# d 컬럼과 e 컬럼 초기화df['d'] = np.nandf['e'] = np.random.randint(-5, 10, size=l..