Pandas将String对象转换为小写并检查字符串

Question

我有以下代码

import pandas as pd
private = pd.read_excel("file.xlsx","Pri")
public = pd.read_excel("file.xlsx","Pub")
private["ISH"] = private.HolidayName.str.lower().contains("holiday|recess")
public["ISH"] = public.HolidayName.str.lower().contains("holiday|recess")

我收到以下错误:

AttributeError: 'Series' object has no attribute 'contains'

反正到"HolidayName"列转换为小写,然后检查正则表达式("Holiday|Recess")使用.contains一步到位？

任何帮助,将不胜感激

Answer 1

private["ISH"] = private.HolidayName.str.contains("(?i)holiday|recess")

将(?i)在正则表达式告诉re模块忽略大小写.

您收到错误的原因是Series对象没有该contains方法; 相反,该Series.str属性具有该contains方法.所以你可以避免错误:

private["ISH"] = private.HolidayName.str.lower().str.contains("holiday|recess")

Answer 2

我参加聚会有点晚，但是您可以使用keyarg大小写：bool，默认为True，如果为True，则区分大小写。

private["ISH"] = private.HolidayName.str.contains("holiday|recess", case=False)
public["ISH"] = public.HolidayName.str.contains("holiday|recess", case=False)