diff --git a/lib/py_unit_adapter.rb b/lib/py_unit_adapter.rb
index a7921d9c..8b38a8d9 100644
--- a/lib/py_unit_adapter.rb
+++ b/lib/py_unit_adapter.rb
@@ -2,8 +2,7 @@ class PyUnitAdapter < TestingFrameworkAdapter
   COUNT_REGEXP = /Ran (\d+) test/
   FAILURES_REGEXP = /FAILED \(.*failures=(\d+).*\)/
   ERRORS_REGEXP = /FAILED \(.*errors=(\d+).*\)/
-  # The regex below also catches new line separators.
-  ASSERTION_ERROR_REGEXP = /AssertionError:\s(.*?)\s\s----------------------------------------------------------------------/m
+  ASSERTION_ERROR_REGEXP = /^(ERROR|FAIL):\ (.*?)\ .*?^[^\.\n]*?(Error|Exception):\s((\s|\S)*?)(>>>.*?)*\s\s(-|=){70}/m
 
   def self.framework_name
     'PyUnit'
@@ -15,7 +14,16 @@ class PyUnitAdapter < TestingFrameworkAdapter
     failed = failures_matches ? failures_matches.captures.try(:first).to_i : 0
     error_matches = ERRORS_REGEXP.match(output[:stderr])
     errors = error_matches ? error_matches.captures.try(:first).to_i : 0
-    assertion_error_matches = output[:stderr].scan(ASSERTION_ERROR_REGEXP).flatten || []
+    assertion_error_matches = output[:stderr].scan(ASSERTION_ERROR_REGEXP).map { |match|
+      testname = match[1]
+      error = match[3].strip
+
+      if testname == 'test_assess'
+        error
+      else
+        "#{testname}: #{error}"
+      end
+    }.flatten || []
     {count: count, failed: failed + errors, error_messages: assertion_error_matches}
   end
 end