bpo-38347: find pathfix for Python scripts whose name contain a '-' (pythonGH-16536) (pythonGH-16719)

pathfix.py: Assume all files that end on '.py' are Python scripts when working recursively.

(cherry picked from commit 2b7dc40)

Author: vstinner

Misc/NEWS.d/next/Tools-Demos/2019-10-02-09-48-42.bpo-38347.2Tq5D1.rst

@@ -0,0 +1 @@
+pathfix.py: Assume all files that end on '.py' are Python scripts when working recursively.

Tools/scripts/pathfix.py

@@ -70,9 +70,9 @@ def main():
             if fix(arg): bad = 1
     sys.exit(bad)
 
-ispythonprog = re.compile(r'^[a-zA-Z0-9_]+\.py$')
+
 def ispython(name):
-    return bool(ispythonprog.match(name))
+    return name.endswith('.py')
 
 def recursedown(dirname):
     dbg('recursedown(%r)\n' % (dirname,))