Fix invalid escape sequences

Author: asottile

pytest_bdd/feature.py

@@ -57,8 +57,8 @@
     ("But ", None),
 ]
 
-STEP_PARAM_RE = re.compile("\<(.+?)\>")
-COMMENT_RE = re.compile('(^|(?<=\s))#')
+STEP_PARAM_RE = re.compile(r"\<(.+?)\>")
+COMMENT_RE = re.compile(r'(^|(?<=\s))#')
 
 
 def get_step_type(line):

pytest_bdd/scenario.py

@@ -50,8 +50,8 @@ def execfile(filename, init_globals):
         init_globals.update(result)
 
 
-PYTHON_REPLACE_REGEX = re.compile("\W")
-ALPHA_REGEX = re.compile("^\d+_*")
+PYTHON_REPLACE_REGEX = re.compile(r"\W")
+ALPHA_REGEX = re.compile(r"^\d+_*")
 
 
 def find_argumented_step_fixture_name(name, type_, fixturemanager, request=None):

tests/feature/test_outline.py

@@ -49,9 +49,9 @@ def wrongly_outlined():
             pass
 
     assert re.match(
-        """Scenario \"Outlined with wrong examples\" in the feature \"(.+)\" has not valid examples\. """
-        """Set of step parameters (.+) should match set of example values """
-        """(.+)\.""",
+        r"""Scenario \"Outlined with wrong examples\" in the feature \"(.+)\" has not valid examples\. """
+        r"""Set of step parameters (.+) should match set of example values """
+        r"""(.+)\.""",
         exc.value.args[0]
     )
 

tests/steps/test_unicode.py

@@ -24,7 +24,7 @@ def test_steps_in_py_file_have_unicode():
     pass
 
 
-pattern = '(?P<content>\'\w+\')'
+pattern = r"(?P<content>'\w+')"
 
 
 @pytest.fixture