Flatten nested ifs into if-elif

This makes the control flow slightly easier to understand.
pypa · Dec 7, 2022 · d2a05d6 · d2a05d6
1 parent 0e48461
commit d2a05d6
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/packaging/_parser.py b/packaging/_parser.py
@@ -175,13 +175,14 @@ def _parse_extras_list(tokenizer: Tokenizer) -> List[str]:
 
     while True:
         tokenizer.consume("WS")
-        if not tokenizer.check("COMMA"):
-            if tokenizer.check("IDENTIFIER", peek=True):
-                tokenizer.raise_syntax_error("Expected comma between extra names")
+        if tokenizer.check("IDENTIFIER", peek=True):
+            tokenizer.raise_syntax_error("Expected comma between extra names")
+        elif not tokenizer.check("COMMA"):
             break
 
         tokenizer.read()
         tokenizer.consume("WS")
+
         extra_token = tokenizer.expect("IDENTIFIER", expected="extra name after comma")
         extras.append(extra_token.text)