對于python，這幾天一直有兩個問題在困擾我:
1.python中沒辦法直接取得當前的行號和函數名。這是有人在論壇里提出的問題，底下一群人只是在猜測python為什么不像__file__一樣提供__line__和__func__，但是卻最終也沒有找到解決方案。
2.如果一個函數在不知道自己名字的情況下，怎么才能遞歸調用自己。這是我一個同事問我的，其實也是獲取函數名，但是當時也是回答不出來。

但是今晚！所有的問題都有了答案。
一切還要從我用python的logging模塊說起，logging中的format中是有如下選項的:

代碼如下:
%(name)s            Name of the logger (logging channel)
%(levelno)s         Numeric logging level for the message (DEBUG, INFO,
                    WARNING, ERROR, CRITICAL)
%(levelname)s       Text logging level for the message ("DEBUG", "INFO",
                    "WARNING", "ERROR", "CRITICAL")
%(pathname)s        Full pathname of the source file where the logging
                    call was issued (if available)
%(filename)s        Filename portion of pathname
%(module)s          Module (name portion of filename)
%(lineno)d          Source line number where the logging call was issued
                    (if available)
%(funcName)s        Function name
%(created)f         Time when the LogRecord was created (time.time()
                    return value)
%(asctime)s         Textual time when the LogRecord was created
%(msecs)d           Millisecond portion of the creation time
%(relativeCreated)d Time in milliseconds when the LogRecord was created,
                    relative to the time the logging module was loaded
                    (typically at application startup time)
%(thread)d          Thread ID (if available)
%(threadName)s      Thread name (if available)