How Python implements the monitoring program execution time and writes it to the log

This example describes how Python implements the monitoring program execution time and writes it to the log. Share to everyone for your reference. The implementation method is as follows:

#/usr/bin/python#-*-coding:utf-8-*-from time Import timedef logged (when):  def log (F,*args,**kargs):    print ' '         called:          functions:%s          args:%r          kargs:%r    '  % (F,args,kargs)  def pre_logged (f):    def wrapper (*args,**kargs):      log (F,*args,**kargs)      return F (*args,**kargs)    return wrapper  def Post_logged (f):    def wrapper (*args,**kargs): Now      = time ()      try:        return F (*args,**kargs)      Finally:        log (F,*args,**kargs)        print "Time delta:%s"% (Time ()-now)    return wrapper  try:    return {"Pre":p re_logged, "POST":p Ost_logged}[when]  except keyerror,e:    raise ValueError (e), ' must be "pre" or "POST" ' @logged ("post") def Hello (name):  print "Hello,", Namehello ("world!") " Equivalent to: Hello = logged ("post") (Hello ("world!")) "

Hopefully this article will help you with Python programming.

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