Each Member's First Gym Visit

PandasEasyJunior level~10 min

Problem

A gym records every visit by its members.

DataFrame: `visits` (from `visits.csv`)

| Column | Type |
|-------------|--------|
| member_id | int |
| branch_id | int |
| visit_date | object |
| minutes | int |

Each row is one day a member checked in at some branch and trained for a number of minutes.

Write a function that finds the **first visit date** for each member. Return columns `member_id` and `first_visit`, in any order.

Example rows — the live problem includes the full dataset.

visits

member_id	branch_id	visit_date	minutes
1	2	2021-01-10	45
1	2	2021-02-04	60
2	3	2021-03-22	30
3	1	2021-01-15	0
3	4	2021-05-09	50

Your answer should return 3 rows with the columns member_id, first_visit.

import pandas as pd

def first_visit(visits: pd.DataFrame) -> pd.DataFrame:
    # Your code here
    return visits

Write Pandas (Python) and run it instantly in your browser — even on your phone. No signup needed to try.

Create a free account to unlock the optimal solution, a step-by-step explanation, and the hidden test cases that grade your answer.