diff --git a/.gitignore b/.gitignore
index 870312a..99bce08 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@
 .tox/
 .cache/
 .vscode
+.venv
\ No newline at end of file
diff --git a/mako/testing/helpers.py b/mako/testing/helpers.py
index bd5d21c..5ae9d38 100644
--- a/mako/testing/helpers.py
+++ b/mako/testing/helpers.py
@@ -20,11 +20,7 @@ def result_lines(result):
 
 
 def result_raw_lines(result):
-    return [
-        x
-        for x in re.split(r"\r?\n", result)
-        if x.strip() != ""
-    ]
+    return [x for x in re.split(r"\r?\n", result) if x.strip() != ""]
 
 
 def make_path(
diff --git a/my/test.py b/my/test.py
new file mode 100644
index 0000000..9bcc2d3
--- /dev/null
+++ b/my/test.py
@@ -0,0 +1,56 @@
+from mako.template import Template
+from mako.lexer import Lexer
+from mako.testing.helpers import result_raw_lines
+
+
+# t = Template("""%% do something
+# %%% do something
+# if <some condition>:
+#     %%%% do something
+#         """)
+
+
+t = Template(
+            """
+% for i in [1, 2, 3]:
+    %% do something ${i}
+% endfor
+"""
+)
+t =             """
+% for i in [1, 2, 3]:
+    %% do something ${i}
+% endfor
+"""
+# print(result_raw_lines(t.render()))
+print(Lexer(t).parse())
+# import re
+
+# pat = re.compile(
+#             r"""
+#                 (.*?)         # anything, followed by:
+#                 (
+#                  (?<=\n)((?<! )?=[ \t]*(?=%|\#\#)) # an eval or line-based
+#                                              # comment, preceded by a
+#                                              # consumed newline and whitespace
+#                  |
+#                   (?<!%)(?=%%+)  # consume the first percent sign out of a group of percent signs
+#                  |
+#                  (?=\${)      # an expression
+#                  |
+#                  (?=</?[%&])  # a substitution or block or call start or end
+#                               # - don't consume
+#                  |
+#                  (\\\r?\n)    # an escaped newline  - throw away
+#                  |
+#                  \Z           # end of string
+#                 )""", re.S | re.X
+# )
+
+
+# c = """
+#   % for
+# """
+
+# r = pat.match(c)
+# print(r)
diff --git a/test/test_lexer.py b/test/test_lexer.py
index e063e11..f168f80 100644
--- a/test/test_lexer.py
+++ b/test/test_lexer.py
@@ -223,8 +223,9 @@ def test_percent_escape2(self):
                 {},
                 [
                     Text("% do something\n", (1, 2)),
-                    Text("%% do something\nif <some condition>:\n    ",
-                         (2, 2)),
+                    Text(
+                        "%% do something\nif <some condition>:\n    ", (2, 2)
+                    ),
                     Text("%%% do something\n        ", (4, 6)),
                 ],
             ),
@@ -242,13 +243,14 @@ def test_percent_escape_with_control_block(self):
             TemplateNode(
                 {},
                 [
-                    Text('\n', (1, 1)),
-                    ControlLine('for', 'for i in [1, 2, 3]:', False, (2, 1)),
-                    Text('    ', (3, 1)),
-                    Text('% do something ', (3, 6)),
-                    Expression('i', [], (3, 21)),
-                    Text('\n', (3, 25)),
-                    ControlLine('for', 'endfor', True, (4, 1))]
+                    Text("\n", (1, 1)),
+                    ControlLine("for", "for i in [1, 2, 3]:", False, (2, 1)),
+                    Text("    ", (3, 1)),
+                    Text("% do something ", (3, 6)),
+                    Expression("i", [], (3, 21)),
+                    Text("\n", (3, 25)),
+                    ControlLine("for", "endfor", True, (4, 1)),
+                ],
             ),
         )
 
diff --git a/test/test_template.py b/test/test_template.py
index 3df7ada..79017f7 100644
--- a/test/test_template.py
+++ b/test/test_template.py
@@ -14,7 +14,8 @@
 from mako.testing.config import config
 from mako.testing.fixtures import TemplateTest
 from mako.testing.helpers import flatten_result
-from mako.testing.helpers import result_lines, result_raw_lines
+from mako.testing.helpers import result_lines
+from mako.testing.helpers import result_raw_lines
 
 
 class ctx:
@@ -1671,11 +1672,13 @@ def test_future_import(self):
 
 class EscapeTest(TemplateTest):
     def test_percent_escape(self):
-        t = Template("""%% do something
+        t = Template(
+            """%% do something
 %%% do something
 if <some condition>:
     %%%% do something
-""")
+"""
+        )
         assert result_raw_lines(t.render()) == [
             "% do something",
             "%% do something",
@@ -1684,11 +1687,13 @@ def test_percent_escape(self):
         ]
 
     def test_percent_escape2(self):
-        t = Template("""
+        t = Template(
+            """
 % for i in [1, 2, 3]:
     %% do something ${i}
 % endfor
-""")
+"""
+        )
         assert result_raw_lines(t.render()) == [
             "    % do something 1",
             "    % do something 2",