Python:基于装饰器函数实现函数Debug跟踪

Decorater.py

#coding:utf-8
#############################
#装饰器：在函数体前后插入执行代码，并完成封装
#利用装饰器函数实现对函数跟踪
#添加装饰器实现Debug调试
#///////////////////////////////////////////////////////////
#from Decorater import trace_func as trace
#///////////////////////////////////////////////////////////
import profile

#############################
#类装饰器风格
#############################
class trace_class(object):

    def __init__(self, func):
		self.f = func

    def __call__(self,*args, **kargs):
		print ('===Start with:===\n          %s(%s, %s)...' % (self.f.__name__, args, kargs))
		print('===Key-Valus:===\n          %s' % locals())
		print('===Output with:===\n          %s' % self.f(*args,**kargs))
		print('===Profile Report:===')
		profile.run(self.f.__name__)
		print('==================================================')

###############################
#函数装饰器风格
###############################
def trace_func(func):                                   #函数入口
	"""
	A decorate function to track all function invoke information with DEBUG level
	Usage:
	@trace_func
	def any_function(any parametet)
	"""
	def new_func(*args, **kargs):                       #函数参数
		print ('###Start with:###\n          %s(%s, %s)...' % (func.__name__, args, kargs))
		print('###Key-Valus:###\n          %s' % locals())
		print('###Output with:###\n          %s' % func(*args,**kargs))
		print('###Profile Report:###')
		profile.run(func.__name__)
		print('==================================================')
		return func(*args, **kargs)
	return new_func                                           #装饰函数出口

@trace_class
def log_test_with_empty_parameter():
	pass

@trace_func
def log_test_with_many_parameter(a_int, b_string, c_list, d_dict):
	pass

@trace_func
def log_test_with_key_parameter(a = 'www', b = 1, c = [1,2]):
	pass

#######################################
#测试代码
if __name__ == '__main__':
	#代码覆盖率测试
	import coverage
	cov = coverage.coverage()
	cov.start()
	##################################################
	log_test_with_empty_parameter()
	log_test_with_many_parameter(1, 'wwww', [1,2,'c'], {1: 'a', 2 : 'ww'})
	log_test_with_key_parameter(1, 'wwww', c = [3, 4])
	##################################################
	cov.stop()
	cov.save()