阅读csv专栏

Question

使用csv显示因错误而短缺的不同日期的总错误数和警告数

我的csv文件格式：

Date    Level    Message
2016-04-23 04:44:43.472132    [debug]    email error
2016-04-23 04:44:43.472132   [debug]     error
2016-04-23 04:44:43.472132   [warning]   debug error
2016-04-23 04:44:43.472132   [warning]   warning message

预期输出格式：

Date               Errors      Warnings
2015-11-23          45            320
2015-11-22          20            200

Answer 1

logs = {}
with open("log.csv") as csv_file:
    for line in csv_file:
        date, time, type, message = line.split(None, 4)
        log_by_date = logs.setdefault(date, {})
        log_by_date[type] = log_by_date.get(type, 0) + 1

print(logs)

这应该有用......