LiJell's 성장기

Modified on Jan 10 # -- coding: utf-8 -- """ Created on Tue Dec 28 14:56:05 2021 @author: hanju """ 16. NA 결측치 처리, 중복값 제거 (significantly important) NA (결측치) 처리 숫자형 NA (float type), 문자형 NA import numpy as np import pandas as pd from pandas import Series, DataFrame s1= Series([1,2,3,np.nan]) s1 # 0 1.0 # 1 2.0 # 2 3.0 # 3 NaN # dtype: float64 s2 = Series(['a','b','c', np.na..