Fix warning about invalid escape sequence in docstring

ford/_markdown.py

@@ -130,7 +130,7 @@ def convert(
 
 
 class AliasPreprocessor(Preprocessor):
-    """Substitute text aliases of the form ``|foo|`` from a dictionary
+    r"""Substitute text aliases of the form ``|foo|`` from a dictionary
     of aliases and their replacements.
     The backslash ``\`` acts as an escape character, aliases of the
     form ``\|foo|`` will not be replaced, but instead copied verbatim
@@ -157,8 +157,8 @@ def run(self, lines: List[str]) -> List[str]:
             # replace the real aliases
             line = self.ALIAS_RE.sub(self._lookup, line)
             # replace the escaped aliases verbatim, without the preceding `\`
-            line = re.sub(r"\\(\|([^ ].*?[^ ]?)\|)", r"\g<1>",line)
-            lines[line_num]=line
+            line = re.sub(r"\\(\|([^ ].*?[^ ]?)\|)", r"\g<1>", line)
+            lines[line_num] = line
         return lines
 
 

ford/intrinsics.py

@@ -1,5 +1,4 @@
-"""This module just has a big list of the intrinsic functions to save space in sourceform.py
-"""
+"""This module just has a big list of the intrinsic functions to save space in sourceform.py"""
 
 INTRINSICS = [
     "abort",

ford/output.py

@@ -119,7 +119,7 @@ def __init__(self, settings: ProjectSettings, proj_docs: str, project, pagetree)
         # Also, in future for other template, we may not need to
         # pass the data obj.
         env.globals["projectData"] = asdict(settings)
-        env.loader=jinja2.FileSystemLoader(
+        env.loader = jinja2.FileSystemLoader(
             settings.html_template_dir + [loc / "templates"]
         )
 

ford/tipue_search.py

@@ -43,6 +43,7 @@
 
 from ford.settings import EntitySettings
 
+
 class Tipue_Search_JSON_Generator:
     def __init__(self, output_path: os.PathLike, project_url: str):
         self.output_path = pathlib.Path(output_path)

test/test_markdown.py

@@ -12,7 +12,7 @@ def test_sub_alias():
 
 
 def test_sub_alias_escape():
-    def_alias={"a":"b"}
+    def_alias = {"a": "b"}
 
     result = MetaMarkdown(aliases=def_alias).convert("\|a|")
     assert result == "<p>|a|</p>"
@@ -24,7 +24,6 @@ def test_sub_alias_escape():
     assert result == "<p>|undefined|</p>"
 
 
-
 def test_sub_alias_with_equals():
     result = MetaMarkdown(aliases={"a": "b=c"}).convert("|a|")