Support comments in ansible-test flat files.

test/runner/lib/sanity/compile.py

@@ -17,6 +17,7 @@ from lib.util import (
     run_command,
     display,
     find_python,
+    read_lines_without_comments,
 )
 
 from lib.config import (
@@ -37,12 +38,10 @@ class CompileTest(SanityMultipleVersion):
         :type python_version: str
         :rtype: TestResult
         """
-        # optional list of regex patterns to exclude from tests
         skip_file = 'test/sanity/compile/python%s-skip.txt' % python_version
 
         if os.path.exists(skip_file):
-            with open(skip_file, 'r') as skip_fd:
-                skip_paths = skip_fd.read().splitlines()
+            skip_paths = read_lines_without_comments(skip_file)
         else:
             skip_paths = []
 
@@ -87,6 +86,9 @@ class CompileTest(SanityMultipleVersion):
         for path in skip_paths:
             line += 1
 
+            if not path:
+                continue
+
             if not os.path.exists(path):
                 # Keep files out of the list which no longer exist in the repo.
                 results.append(SanityMessage(