#!/usr/bin/env python ''' 处理访问日志,筛选时间大于1秒的请求 ''' with open('test.log','a+',encoding='utf-8') as f_a: with open('wkxz-api.access.log') as f: for line in f.readlines(): if line[-2:] == "-\n" : num =float(line[-7:-2]) else: num=float(line[-6:]) if
本文转自:https://www.dotnetperls.com/datatable-select-vbnet VB.NET DataTable Select Function This VB.NET example program uses the DataTable type and its Select Function. Select searches for matching rows with a query. DataTable Select. A DataTable stores
处理nginx访问日志,筛选时间大于1秒的请求 #!/usr/bin/env python ''' 处理访问日志,筛选时间大于1秒的请求 ''' with open('test.log','a+',encoding='utf-8') as f_a: with open('wkxz-api.access.log') as f: for line in f.readlines(): if line[-2:] == "-\n" : num =float(line[-7:-2]) else
DataTable分组统计: .用两层循环计算,前提条件是数据已经按分组的列排好序的. DataTable dt = new DataTable(); dt.Columns.AddRange(new DataColumn[] { new DataColumn("name", typeof(string)), new DataColumn("sex", typeof(string)), new DataColumn("score", typeof(