Merge pull request #375 from liho00/liho00-patch-1

Update models.py

Author: sibiryakov

frontera/core/models.py

@@ -81,7 +81,7 @@ def body(self):
 
     def __str__(self):
         return "<%s at 0x%0x %s meta=%s body=%s... cookies=%s, headers=%s>" % (type(self).__name__, id(self), self.url,
-                                                                               str(self.meta), str(self.body[:20]),
+                                                                               str(self.meta), str(self.body[:20]) if self.body is not None else None,
                                                                                str(self.cookies), str(self.headers))
 
     def __hash__(self):
@@ -163,6 +163,6 @@ def __str__(self):
         return "<%s at 0x%0x %s %s meta=%s body=%s... headers=%s>" % (type(self).__name__,
                                                                       id(self), self.status_code,
                                                                       self.url, str(self.meta),
-                                                                      str(self.body[:20]), str(self.headers))
+                                                                      str(self.body[:20]) if self.body is not None else None, str(self.headers))
 
     __repr__ = __str__