1 files changed, 25 insertions, 27 deletions
diff --git a/tools/find_deprecated_escaped_characters.py b/tools/find_deprecated_escaped_characters.py
index 8015d3a42..6f90001ca 100644
--- a/tools/find_deprecated_escaped_characters.py
+++ b/tools/find_deprecated_escaped_characters.py
@@ -1,8 +1,8 @@
 #! /usr/bin/env python
-"""
+r"""
 Look for escape sequences deprecated in Python 3.6.
 
-Python 3.6 deprecates a number of non-escape sequences starting with `\` that
+Python 3.6 deprecates a number of non-escape sequences starting with '\' that
 were accepted before. For instance, '\(' was previously accepted but must now
 be written as '\\(' or r'\('.
 
@@ -31,38 +31,36 @@ def main(root):
     None
 
     """
-    count = 0
-
-    if sys.version_info[:2] >= (3, 6):
-        import ast
-        import tokenize
-        import warnings
-        from pathlib import Path
-
-        base = Path(root)
-        paths = base.rglob("*.py") if base.is_dir() else [base]
-        for path in paths:
-            # use tokenize to auto-detect encoding on systems where no
-            # default encoding is defined (e.g. LANG='C')
-            with tokenize.open(str(path)) as f:
-                with warnings.catch_warnings(record=True) as w:
-                    warnings.simplefilter('always')
-                    tree = ast.parse(f.read())
-                if w:
-                    print("file: ", str(path))
-                    for e in w:
-                        print('line: ', e.lineno, ': ', e.message)
-                    print()
-                    count += len(w)
-    else:
-        raise RuntimeError("Python version must be >= 3.6")
+    import ast
+    import tokenize
+    import warnings
+    from pathlib import Path
 
+    count = 0
+    base = Path(root)
+    paths = base.rglob("*.py") if base.is_dir() else [base]
+    for path in paths:
+        # use tokenize to auto-detect encoding on systems where no
+        # default encoding is defined (e.g. LANG='C')
+        with tokenize.open(str(path)) as f:
+            with warnings.catch_warnings(record=True) as w:
+                warnings.simplefilter('always')
+                tree = ast.parse(f.read())
+            if w:
+                print("file: ", str(path))
+                for e in w:
+                    print('line: ', e.lineno, ': ', e.message)
+                print()
+                count += len(w)
     print("Errors Found", count)
 
 
 if __name__ == "__main__":
     from argparse import ArgumentParser
 
+    if sys.version_info[:2] < (3, 6):
+        raise RuntimeError("Python version must be >= 3.6")
+
     parser = ArgumentParser(description="Find deprecated escaped characters")
     parser.add_argument('root', help='directory or file to be checked')
     args = parser.parse_args()