Added date search for Vox. To accomplish this, enhanced find_by_date …

xword_dl/downloader/voxdownloader.py

@@ -16,3 +16,15 @@ def __init__(self, **kwargs):
     def guess_date_from_id(self, puzzle_id):
         self.date = datetime.datetime.strptime(puzzle_id.split('_')[1],
                                                '%Y%m%d')
+
+    def find_by_date(self, dt):
+        url_formatted_date = dt.strftime('%Y%m%d')
+        prefixes = ['vox_', 'PBvox_', 'APvox_', 'WNvox_', 'AOKvox_', 'JGvox_', 'AJRvox_', 'JGVox_']  # The author varies by day, and their initials may or may not be present as a prefix
+        suffixes = ['_1000', '_1100', '', '_1000%20(1)', '_1101']  # The suffix is always one of these. I can't determine the pattern.
+        self.get_and_add_picker_token()
+        candidate_urls = []
+        for suffix in suffixes:  # On average, it will be faster to search by the most frequent suffixes first
+            for prefix in prefixes:
+                self.id = prefix + url_formatted_date + suffix
+                candidate_urls.append(self.find_puzzle_url_from_id(self.id))
+        return candidate_urls

xword_dl/xword_dl.py

@@ -43,12 +43,28 @@ def by_keyword(keyword, **kwargs):
         raise XWordDLException(
             'Selection by date not available for {}.'.format(dl.outlet))
 
-    puzzle = dl.download(puzzle_url)
+    if isinstance(puzzle_url, list):
+        puzzle = get_puzzle_from_candidate_urls(dl, puzzle_url)
+    else:
+        puzzle = dl.download(puzzle_url)
     filename = dl.pick_filename(puzzle)
 
     return puzzle, filename
 
 
+def get_puzzle_from_candidate_urls(dl, candidate_urls):
+    puzzle = None
+    for url in candidate_urls:
+        try:
+            puzzle = dl.download(url)
+            if puzzle:
+                return puzzle
+        except Exception:
+            continue
+    if not puzzle:
+        raise XWordDLException('Crossword puzzle not found.')
+
+
 def by_url(url, **kwargs):
     supported_downloaders = [d[1] for d in
             get_supported_outlets(command_only=False)
@@ -121,7 +137,7 @@ def parse_for_embedded_puzzle(url, **kwargs):
 def get_supported_outlets(command_only=True):
     all_classes = inspect.getmembers(sys.modules['xword_dl.downloader'],
                                      inspect.isclass)
-    dls = [d for d in all_classes if issubclass(d[1], 
+    dls = [d for d in all_classes if issubclass(d[1],
                    downloader.BaseDownloader)]
 
     if command_only: