coverage.py problem

[Orin]

Thank you very much. Just reading the comments on that url, I found the reason of my problem. 

It was here:

--- coverage.py 
+++ coverage.py 
@@ -464,6 +464,8 @@

def collect(self): 
cache_dir, local = os.path.split(self.cache) 
+ if not cache_dir:   #this two strings was upsent
+ cache_dir = "." 
for file in os.listdir(cache_dir): 
if not file.startswith(local): 
continue				

With best regards, Orin