diff --git a/flake8_rst/rst.py b/flake8_rst/rst.py
index 124a1ca..b10a3c4 100644
--- a/flake8_rst/rst.py
+++ b/flake8_rst/rst.py
@@ -28,32 +28,34 @@
     re.MULTILINE,
 )
 
+EXPRESSIONS = (RST_RE, ANCHOR_RE)
+
 
 def find_sourcecode(src):
-    for expression in [RST_RE, ANCHOR_RE]:
-        for match in expression.finditer(src):
-            origin_code = match.group('code')
+    matches = (match for expression in EXPRESSIONS for match in expression.finditer(src))
+    for match in matches:
+        origin_code = match.group('code')
 
-            try:
-                min_indent = min(INDENT_RE.findall(origin_code))
-            except ValueError:
-                min_indent = ''
+        try:
+            min_indent = min(INDENT_RE.findall(origin_code))
+        except ValueError:
+            min_indent = ''
 
-            indent = len(min_indent)
-            code = textwrap.dedent(origin_code)
+        indent = len(min_indent)
+        code = textwrap.dedent(origin_code)
 
-            if '>>>' in code:
-                indent += 4
-                lines = []
+        if '>>>' in code:
+            indent += 4
+            lines = []
 
-                for i, line in enumerate(code.split('\n')):
-                    for anchor in ANCHORS:
-                        if line.startswith(anchor):
-                            lines.append(line[len(anchor):])
-                            break
+            for i, line in enumerate(code.split('\n')):
+                for anchor in ANCHORS:
+                    if line.startswith(anchor):
+                        lines.append(line[len(anchor):])
+                        break
 
-                code = '\n'.join(lines)
+            code = '\n'.join(lines)
 
-            line_number = src[:match.start()].count('\n') + match.group('before').count('\n')
+        line_number = src[:match.start()].count('\n') + match.group('before').count('\n')
 
-            yield code.rstrip(), indent, line_number
+        yield code.rstrip(), indent, line_number
diff --git a/tests/data/example_10.py b/tests/data/example_10.py
index e6e2ae6..c1337e5 100644
--- a/tests/data/example_10.py
+++ b/tests/data/example_10.py
@@ -16,4 +16,4 @@
 
 >>> print('This line is highlighted.')
 This line is highlighted.
-"""
\ No newline at end of file
+"""
diff --git a/tests/result_py2/result_10.py b/tests/result_py2/result_10.py
index 53c8124..45204c1 100644
--- a/tests/result_py2/result_10.py
+++ b/tests/result_py2/result_10.py
@@ -1,8 +1,8 @@
 ('test_precisely',
- [('F821', 20, 10, "undefined name 'LdaModel'", None),
-  ('F821', 20, 26, "undefined name 'mm'", None),
-  ('F821', 20, 38, "undefined name 'id2word'", None),
-  ('F821', 22, 10, "undefined name 'LdfModel'", None),
-  ('F821', 22, 26, "undefined name 'cm'", None),
-  ('F821', 22, 38, "undefined name 'id2word'", None)],
+ [('F821', 21, 10, "undefined name 'LdaModel'", None),
+  ('F821', 21, 26, "undefined name 'mm'", None),
+  ('F821', 21, 38, "undefined name 'id2word'", None),
+  ('F821', 23, 10, "undefined name 'LdfModel'", None),
+  ('F821', 23, 26, "undefined name 'cm'", None),
+  ('F821', 23, 38, "undefined name 'id2word'", None)],
  {'logical lines': 5, 'physical lines': 6, 'tokens': 52})
diff --git a/tests/result_py3/result_10.py b/tests/result_py3/result_10.py
index 53c8124..45204c1 100644
--- a/tests/result_py3/result_10.py
+++ b/tests/result_py3/result_10.py
@@ -1,8 +1,8 @@
 ('test_precisely',
- [('F821', 20, 10, "undefined name 'LdaModel'", None),
-  ('F821', 20, 26, "undefined name 'mm'", None),
-  ('F821', 20, 38, "undefined name 'id2word'", None),
-  ('F821', 22, 10, "undefined name 'LdfModel'", None),
-  ('F821', 22, 26, "undefined name 'cm'", None),
-  ('F821', 22, 38, "undefined name 'id2word'", None)],
+ [('F821', 21, 10, "undefined name 'LdaModel'", None),
+  ('F821', 21, 26, "undefined name 'mm'", None),
+  ('F821', 21, 38, "undefined name 'id2word'", None),
+  ('F821', 23, 10, "undefined name 'LdfModel'", None),
+  ('F821', 23, 26, "undefined name 'cm'", None),
+  ('F821', 23, 38, "undefined name 'id2word'", None)],
  {'logical lines': 5, 'physical lines': 6, 'tokens': 52})