Changes os.path to pathlib.Path usage

changed args.rules , args.signatures types in handle_common_args.

tests/test_rule_cache.py

@@ -76,12 +76,12 @@ def test_ruleset_cache_save_load():
 
     path = capa.rules.cache.get_cache_path(cache_dir, id)
     try:
-        os.remove(path)
+        path.unlink()
     except OSError:
         pass
 
     capa.rules.cache.cache_ruleset(cache_dir, rs)
-    assert os.path.exists(path)
+    assert path.exists()
 
     assert capa.rules.cache.load_cached_ruleset(cache_dir, content) is not None
 
@@ -93,23 +93,23 @@ def test_ruleset_cache_invalid():
     cache_dir = capa.rules.cache.get_default_cache_directory()
     path = capa.rules.cache.get_cache_path(cache_dir, id)
     try:
-        os.remove(path)
+        path.unlink()
     except OSError:
         pass
 
     capa.rules.cache.cache_ruleset(cache_dir, rs)
-    assert os.path.exists(path)
+    assert path.exists()
 
-    with open(path, "rb") as f:
-        buf = f.read()
+    buf = path.read_bytes()
 
-    # corrupt the magic header
+    # Corrupt the magic header
     buf = b"x" + buf[1:]
 
-    with open(path, "wb") as f:
-        f.write(buf)
+    # Write the modified contents back to the file
+    path.write_bytes(buf)
 
-    assert os.path.exists(path)
+    # Check if the file still exists
+    assert path.exists()
     assert capa.rules.cache.load_cached_ruleset(cache_dir, content) is None
     # the invalid cache should be deleted
-    assert not os.path.exists(path)
+    assert not path.exists()