我想在包含列表中任何子字符串的列中选择那些行。这就是我现在所拥有的。
product = ['LID', 'TABLEWARE', 'CUP', 'COVER', 'CONTAINER', 'PACKAGING']
df_plastic_prod = df_plastic[df_plastic['Goods Shipped'].str.contains(product)]
df_plastic_prod.info()
样品df_plastic
Name Product
David PLASTIC BOTTLE
Meghan PLASTIC COVER
Melanie PLASTIC CUP
Aaron PLASTIC BOWL
Venus PLASTIC KNIFE
Abigail PLASTIC CONTAINER
Sophia PLASTIC LID
所需的df_plastic_prod
Name Product
Meghan PLASTIC COVER
Melanie PLASTIC CUP
Abigail PLASTIC CONTAINER
Sophia PLASTIC LID
提前谢谢!感谢您的协助!
答案 0 :(得分:2)
对于子类匹配值,将|
的所有列表值与正则表达式or
结合在一起-因此获取值LID
或TABLEWARE
...:
在list
中使用2个或更多单词的解决方案也能很好地工作。
pat = '|'.join(r"\b{}\b".format(x) for x in product)
df_plastic_prod = df_plastic[df_plastic['Product'].str.contains(pat)]
print (df_plastic_prod)
Name Product
1 Meghan PLASTIC COVER
2 Melanie PLASTIC CUP
5 Abigail PLASTIC CONTAINER
6 Sophia PLASTIC LID
答案 1 :(得分:0)
一种解决方案是使用正则表达式解析'Product'
列,并测试提取的值是否在product
列表中,然后在结果上过滤原始DataFrame。
在这种情况下,将使用非常简单的正则表达式模式((\w+)$
),该模式与行尾的单个单词匹配。
示例代码:
df.iloc[df['Product'].str.extract('(\w+)$').isin(product).to_numpy(), :]
输出:
Name Product
1 Meghan PLASTIC COVER
2 Melanie PLASTIC CUP
5 Abigail PLASTIC CONTAINER
6 Sophia PLASTIC LID
设置:
product = ['LID', 'TABLEWARE', 'CUP',
'COVER', 'CONTAINER', 'PACKAGING']
data = {'Name': ['David', 'Meghan', 'Melanie',
'Aaron', 'Venus', 'Abigail', 'Sophia'],
'Product': ['PLASTIC BOTTLE', 'PLASTIC COVER', 'PLASTIC CUP',
'PLASTIC BOWL', 'PLASTIC KNIFE', 'PLASTIC CONTAINER',
'PLASTIC LID']}
df = pd.DataFrame(data)