Fixed a bug in the python3-coverage tool.

BUGS

@@ -3,7 +3,6 @@ Current
 
 
 Current (tool related)
-- python-coverage is failing in the sub-directories of a project.
 - disassemble for python doesn't always work.
 - gut had an error with utf-8. A traceback printed directly on the screen,
   garbling the interface.
@@ -213,6 +212,7 @@ Fixed
 - Scrolling in the help screen doesn't work with the arrow keys.
 - If vigil is started with eveything up-to-date the up-to-date message never
   appears.
+- python-coverage is failing in the sub-directories of a project.
 
 
 Won't fix

tools.py

@@ -316,10 +316,11 @@ def python_coverage(path):
             env["COVERAGE_FILE"] = coverage_path
             stdout, *rest = _do_command(
                 [python_exe, "run", test_path], env=env, timeout=TIMEOUT)
-            stdout, *rest = _do_command(
-                [python_exe, "annotate", "--directory", temp_dir,
-                 os.path.normpath(path)], env=env)
-            with open(os.path.join(temp_dir, path + ",cover"), "r") as f:
+            path = os.path.normpath(path)
+            stdout, *rest = _do_command([python_exe, "annotate", "--directory",
+                                         temp_dir, path], env=env)
+            flat_path = path.replace("/", "_")
+            with open(os.path.join(temp_dir, flat_path + ",cover"), "r") as f:
                 stdout = f.read()
         return Status.normal, fill3.Text(_colorize_coverage_report(stdout))
     else: