如何为“for循环”运行gevent池？

Question

for row in data:
                data2 = collections.OrderedDict()
                data2["ID"] = row[0]
                data2["Bank Reconciliation Status"] = row[1]
                data2["Date"] = row[2]
                data2["Branch"] = row[3]
                data2["Student"] = row[4]
                data2["Amount"] = row[5]
                data2["Type"] = row[6]
                data2["Remark"] = row[7]
                data2["Attachment"] = "<img src=\"data:image/jpeg;base64," + ThumbnailEngine(row[8]) + "\">"
                brecon.append(data2)
return json.jsonify({"data": brecon})

我可以知道如何为上面的for循环设置gevent池吗？我需要为从第三方API下载的缩略图运行尽可能多的并发请求。多谢各位

Answer 1

我终于自己用下面的解决方案解决了这个问题。现在，Jquery Datatable中的缩略图加载速度提高了15倍：

from gevent.pool import Pool
import collections

    def test(data): # data from postgresql query result as args
        
        data2 = collections.OrderedDict()
        data2["ID"] = data[0]
        data2["Bank Reconciliation Status"] = data[1]
        data2["Date"] = data[2]
        data2["Branch"] = data[3]
        data2["Student"] = data[4]
        data2["Amount"] = data[5]
        data2["Type"] = data[6]
        data2["Remark"] = data[7]
        data2["Attachment"] = "<img src=\"data:image/jpeg;base64," + ThumbnailEngine(data[8]) + "\">"
        return data2

p = Pool()
brecon = tuple(p.map(test, data)) # data from postgresql query result

return json.jsonify({"data": brecon})