sklearn数值特征二值化处理:Binarizer
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import pandas as pd
popsong_df = pd.read_csv('song_views.csv',encoding='utf-8')
popsong_df.head(10)

首先,可直接借助numpy库来完成二值化处理:
import numpy as np
watched = np.array(popsong_df['listen_count'])
watched[watched >= 1] = 1
popsong_df['watched'] = watched
popsong_df.head(10)

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