pandas 判断列是否包含某个字符串

亲测第二种好用

1. in 语句 不包含使用not in

food = df['日期'].values.tolist()
   if '休息' in food:
       print(food)
       if df['共计小时']<4:
           df['餐补']=0
           print(df['餐补'])
       elif 4<=df['共计小时']<10:
           df['餐补']=25
       else:
           df['餐补']=50

2. contains

mask=df['日期'].str.contains(r'休息',na=True)