feat: urls: allow path() instead of re_path() if a path contains dashes

* also delete now unused re.py

django_codemod/visitors/urls.py

@@ -2,7 +2,6 @@
 from libcst import matchers as m
 from libcst.codemod.visitors import AddImportsVisitor
 
-from django_codemod import re
 from django_codemod.constants import DJANGO_3_0, DJANGO_4_0
 from django_codemod.visitors.base import BaseFuncRenameTransformer
 
@@ -11,6 +10,9 @@ class PatternNotSupported(RuntimeError):
     pass
 
 
+# A set of regex special characters sans the dash character
+REGEX_SPECIALS_SANS_DASH = set("()[]{}?*+|^$\\.&~# \t\n\r\v\f")
+
 REGEX_TO_CONVERTER = {
     "[0-9]+": "int",
     r"\d+": "int",
@@ -98,5 +100,5 @@ def parse_next_group(self, left_to_parse):
 
     def check_route(self, route):
         """Check that route doesn't contain anymore regex."""
-        if route != re.escape(route):
-            raise PatternNotSupported("Route contains regex")
+        if set(route) & REGEX_SPECIALS_SANS_DASH:
+            raise PatternNotSupported(f"Route {route} contains regex")

tests/visitors/test_urls.py

@@ -79,6 +79,7 @@ def test_all_path(self) -> None:
             urlpatterns = [
                 url(r'^$', views.index, name='index'),
                 url(r'^about/$', views.about, name='about'),
+                url(r'^more-info/$', views.about, name='more-info'),
             ]
         """
         after = """
@@ -87,6 +88,7 @@ def test_all_path(self) -> None:
             urlpatterns = [
                 path('', views.index, name='index'),
                 path('about/', views.about, name='about'),
+                path('more-info/', views.about, name='more-info'),
             ]
         """
         self.assertCodemod(before, after)