fix as per review

capa/engine.py

@@ -44,7 +44,7 @@ class Statement:
 
     def __str__(self):
         name = self.name.lower()
-        children = ','.join(map(str, self.get_children()))
+        children = ",".join(map(str, self.get_children()))
         if self.description:
             return f"{name}({children} = {self.description})"
         else:

capa/features/extractors/viv/file.py

@@ -44,7 +44,7 @@ def extract_file_import_names(vw, **kwargs) -> Iterator[Tuple[Feature, Address]]
         modname, impname = tinfo.split(".", 1)
         if is_viv_ord_impname(impname):
             # replace ord prefix with #
-            impname = "#"+ impname[len('ord'):]
+            impname = "#" + impname[len("ord") :]
 
         addr = AbsoluteVirtualAddress(va)
         for name in capa.features.extractors.helpers.generate_symbols(modname, impname):

capa/ida/plugin/form.py

@@ -708,8 +708,8 @@ class CapaExplorerForm(idaapi.PluginForm):
                             "capa is showing you cached results from a previous analysis run. Your rules have changed since and you should reanalyze the program to see new results."
                         )
                         view_status_rules = "no rules matched for cache"
-                    
-                    cached_results_time = self.resdoc_cache.meta.timestamp.strftime('%Y-%m-%d %H:%M:%S')
+
+                    cached_results_time = self.resdoc_cache.meta.timestamp.strftime("%Y-%m-%d %H:%M:%S")
                     new_view_status = f"capa rules: {view_status_rules}, cached results (created {cached_results_time})"
                 except Exception as e:
                     logger.error("Failed to load cached capa results (error: %s).", e, exc_info=True)