为 2 列值应用 loc Pandas

Apply loc for 2 columns values Pandas

我想定位一个包含 2 列参数的数据框: 如果我这样做 paises_cpm = df.loc[a] 正在工作,但如果我这样做 paises_cpm = df.loc[a,b] 我收到错误消息:IndexingError: Unalignable boolean Series provided as indexer (index of the boolean Series and of the indexed object do not match

import pandas as pd
import time


fecha = time.strftime(str((int(time.strftime("%d")))-1))

subastas = int(fecha) * 5000
impresiones = int(fecha) * 1000

df = pd.read_csv('Cliente_x_Pais.csv')
a = df['Subastas'] > subastas
b = df['Impresiones_exchange'] > impresiones


paises_cpm = df.loc[a,b]

paises_cpm.to_csv('paises_cpm.csv', index=False)

您需要 | 用于 or& 用于 and 的链条件:

paises_cpm = df.loc[a | b]

或:

paises_cpm = df.loc[a & b]

有一种可能的解决方案,但括号是必要的:

paises_cpm = df.loc[(df['Subastas'] > subastas) | 
                    (df['Impresiones_exchange'] > impresiones)
                   ]