replace the following SQL snippet with equivalent python pandas dataframe code:
SELECT 
    some_id,
    GROUP_CONCAT(DISTINCT parsed_version) AS version,
    GROUP_CONCAT(DISTINCT k_version) AS k8s_version,
    GROUP_CONCAT(DISTINCT CASE WHEN os = '' THEN NULL ELSE os END) AS the_os
FROM table
GROUP BY 1 Write your response using less than 600 words.
user