题解 | #统计运动会项目报名人数#不知道哪里出错
统计运动会项目报名人数
https://www.nowcoder.com/practice/f992129b6da245d5bc5efb2f95289516
import pandas as pd signup = pd.read_csv('signup.csv') items = pd.read_csv('items.csv') df = signup[items['item_id'] == signup['item_id']].groupby('item_name')['employee_id'].count() df = df[df>0] print(df)