Distinct Languages Spoken by Each Guide

PandasEasyJunior level~10 min

Problem

You are given a DataFrame `guide_languages` with columns `guide_id`, `language_id`, and `region_id`. The same guide can be recorded speaking the same language in several regions. Return a DataFrame with columns `guide_id` and `language_count`, where `language_count` is the number of distinct languages each guide speaks. Row order does not matter.

Input data

Example rows — the live problem includes the full dataset.

guide_languages

guide_id	language_id	region_id
1	2	3
1	2	4
1	3	3
2	1	1
2	2	1

Expected output

Your answer should return 2 rows with the columns guide_id, language_count.

Starter code (Pandas (Python))

import pandas as pd

def distinct_languages(guide_languages) -> pd.DataFrame:
    # Your code here
    return guide_languages

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