Question

import csv
import os
import pandas as pd
os.chdir('C:\\Users\\khalha\\Desktop\\RealExcel')
filename = 'sales.csv'

Sales = pd.read_csv('sales.csv')
iFlow = Sales.loc[Sales['Product'].str.contains('Vector HF/LF (Opt 2)', 
na=False), "18-Jun"]
print(iFlow)

MaySales = pd.read_csv('maysales.csv')
iFlowmay = MaySales.loc[MaySales['Product'].str.contains('Vector HF/LF (Opt 
2)', na=False), "18-Jun"]
print(iFlowmay)

我收到错误消息：

C:\Users\khalha\eclipse-workspace\hariskk\hey\hello.py:8: UserWarning: This pattern has match groups. To actually get the groups, use str.extract.
  iFlow = Sales.loc[Sales['Product'].str.contains('Vector HF/LF (Opt 2)', na=False), "18-Jun"]
Series([], Name: 18-Jun, dtype: object)
C:\Users\khalha\eclipse-workspace\hariskk\hey\hello.py:12: UserWarning: This pattern has match groups. To actually get the groups, use str.extract.
  iFlowmay = MaySales.loc[MaySales['Product'].str.contains('Vector HF/LF (Opt 2)', na=False), "18-Jun"]
Series([], Name: 18-Jun, dtype: object)

此代码适用于第一个块，但是当我添加Maysales部分时，它将停止工作。

Answer 1

搜索包含括号的文本时，Python会感到困惑。由于您正在导入数据框，因此我不能只运行您的代码，但是我想是否可以：

iFlow = Sales.loc[Sales['Product'].str.contains('\Vector HF/LF (Opt 2', na=False), "18-Jun"]

它将起作用

用户警告：此模式具有匹配组

1 个答案: