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What is the difference between these fetching.? please give me a examples for reference site to get clear idea.still i'm confuse with it

res = cr.dictfetchall()

res2 = cr.dictfetchone()

res3 = cr.fetchall()

res4 = cr.fetchone()

as per below answers this is dictionary

[{'selected_tea_workers_line_ids': 3}, {'selected_tea_workers_line_ids': 5}]

then how to return value from that.?

    return {'value': {
                      'selected_tea_workers_line_ids':? ? ?
                      }}

refer this

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