Fix save retry mechanism

waybackpy/save_api.py

@@ -22,6 +22,8 @@ def __init__(self, url, user_agent=DEFAULT_USER_AGENT, max_tries=8):
         self.request_url = "https://web.archive.org/save/" + self.url
         self.user_agent = user_agent
         self.request_headers = {"User-Agent": self.user_agent}
+        if max_tries < 1:
+            raise ValueError("max_tries should be positive")
         self.max_tries = max_tries
         self.total_save_retries = 5
         self.backoff_factor = 0.5
@@ -160,27 +162,22 @@ def save(self):
         tries = 0
 
         while True:
-
-            tries += 1
-
-            if tries >= self.max_tries:
-                raise MaximumSaveRetriesExceeded(
-                    "Tried %s times but failed to save and retrieve the" % str(tries)
-                    + " archive for %s.\nResponse URL:\n%s \nResponse Header:\n%s\n"
-                    % (self.url, self.response_url, str(self.headers)),
-                )
-
             if not self.saved_archive:
-
-                if tries > 1:
+                if tries >= 1:
                     self.sleep(tries)
 
                 self.get_save_request_headers()
                 self.saved_archive = self.archive_url_parser()
 
-                if not self.saved_archive:
-                    continue
-                else:
+                if self.saved_archive is not None:
                     self._archive_url = self.saved_archive
                     self.timestamp()
                     return self.saved_archive
+
+            tries += 1
+            if tries >= self.max_tries:
+                raise MaximumSaveRetriesExceeded(
+                    "Tried %s times but failed to save and retrieve the" % str(tries)
+                    + " archive for %s.\nResponse URL:\n%s \nResponse Header:\n%s\n"
+                    % (self.url, self.response_url, str(self.headers)),
+                )