对pandas里的loc并列条件索引的实例讲解

def Family_feature(df):
 df[\'Fam_Size\'] =df[\'SibSp\']+df[\'Parch\']
 df[\'Fam_Size\'].loc[df[\'Fam_Size\'] == 0] = 1
 df[\'Fam_Size\'].loc[(df[\'Fam_Size\'] > 1) & (df[\'Fam_Size\'] <= 3)] = 2
#  df[\'Fam_Size\'].loc[df[\'Fam_Size\'] == 2] = 2
#  df[\'Fam_Size\'].loc[df[\'Fam_Size\'] == 3] = 2
 df[\'Fam_Size\'].loc[df[\'Fam_Size\'] > 3] = 3
 return df