Overhauls the system to better support single comic books.

Not all comics come in serialized issues.

src/comic_download/__init__.py

@@ -14,4 +14,4 @@
 #
 #   You should have received a copy of the GNU General Public License
 #   along with this program.  If not, see <https://www.gnu.org/licenses/>.
-from comic_download.comic_strip import SequenceException, ImageRepo, Comic, ComicStrip, file_safe_string, get_identifier_string, register_comic_class, find_comic_class, read_index, save_index, index_strip, is_strip_present
+from comic_download.comic_strip import SequenceException, ImageRepo, ComicCollection, ComicBook, ComicStrip, file_safe_string, get_identifier_string, register_comic_class, find_comic_class, read_index, save_index, index_strip, is_strip_present

src/comic_download/__main__.py

@@ -27,7 +27,7 @@ from pathlib import Path
 import importlib
 import pkgutil
 import comic_download
-from comic_download import Comic, find_comic_class
+from comic_download import ComicCollection, ComicBook, ComicStrip, find_comic_class
 
 def setup_args():
     parser = argparse.ArgumentParser(
@@ -71,19 +71,25 @@ def load_plugins():
             logging.info("Loading plugin %s" % name)
             importlib.import_module(name)
 
-def load_strip(base_path, comic, identifier, plain, thread_limit):
+def load_book(base_path: Path, comic_type: ComicBook, plain: bool, thread_limit: threading.Semaphore, *args):
     """
-    Threading function for downloading XKCD strips.
-    
-    Arguments:
+    Threading function to add a book to the loading queue.
 
+    :param base_path: The directory to download all downloads to.
+    :param comic: The comic book class to load, or the comic book itself.
+    :param plain: If true, then we skip image transformations.
+    :param thread_limit: The semaphore that controls how many threads we execute at once.
+    :param args: Any arguments here will be passed to the contructor of the comic_type class.
     """
     with thread_limit:
-        strip = comic.create_strip(identifier)
-        strip.await_load()
-        if not strip.get_package_path(base_path).exists():
-            strip.await_download()
-            strip.package_data(base_path)
+        if type(comic_type) == type:
+            book = comic_type(*args)
+        else:
+            book = comic_type
+        book.await_load()
+        if not book.get_package_path(base_path).exists():
+            book.await_download()
+            book.package_data(base_path, plain)
 
 def __main__():
     setup_logging()
@@ -105,30 +111,39 @@ def __main__():
 
     for url in args.url:
         comic_type = find_comic_class(url.netloc + url.path)
-        comic = comic_type.create_from_url(url)
-        comics.append(comic)
-        comic_download.read_index(base_path)
-        comic.await_load()
-        if args.latest:
-            r = [comic.get_latest_strip()]
+        if issubclass(comic_type, ComicStrip):
+            collection = comic_type.collection_cls.create_from_url(url)
+            comic_download.read_index(base_path)
+            collection.await_load()
+
+            # Figure out which strips to grab
+            if args.latest:
+                r = [collection.get_latest_strip()]
+            else:
+                r = collection.get_all_strips()
+                if r and type(r[0]) == int:
+                    start = args.start or collection.get_first_strip()
+                    end = args.end or collection.get_latest_strip()
+                    r = r[r.index(start):r.index(end) + 1]
+
+            # Add the chosen strips to the list of books to add
+            try:
+                for index in reversed(r):
+                    comics.append(comic_type(collection, index))
+            finally:
+                logging.info("Saving index")
+                comic_download.save_index(base_path)
         else:
-            r = comic.get_all_strips()
-            if r and type(r[0]) == int:
-                start = args.start or comic.get_first_strip()
-                end = args.end or comic.get_latest_strip()
-                r = r[r.index(start):r.index(end) + 1]
-
-        try:
-            for index in reversed(r):
-                if not comic_download.is_strip_present(comic, base_path, ".cbz", str(index)):
-                    t = threading.Thread(name=str(comic.get_identifier_string()) + "-" + str(index), target=load_strip, args=(base_path, comic, index, args.plain, thread_limit))
-                    threads.append(t)
-                    t.daemon = True
-                    t.start()
-        finally:
-            logging.info("Saving index")
-            comic_download.save_index(base_path)
+            comics.append(comic_type.create_from_url(url))
 
+        comic_download.read_index(base_path)
+        for comic in comics:
+            # Only make threads for books not accounted for in the index
+            if not comic_download.is_strip_present(comic, base_path, ".cbz"):
+                t = threading.Thread(name=str(comic), target=load_book, args=(base_path, comic, args.plain, thread_limit))
+                threads.append(t)
+                t.daemon = True
+                t.start()
     try:
         while any([t.is_alive() for t in threads]):
             time.sleep(1)

src/comic_download/bluesky.py

@@ -33,7 +33,7 @@ from PIL import Image, ImageDraw, ImageFont
 from bs4 import BeautifulSoup
 from atproto import Client
 
-from comic_download.comic_strip import Comic, ComicStrip, register_comic_class
+from comic_download.comic_strip import ComicCollection as Comic, ComicStrip, register_comic_class
 
 class BlueskyComic(Comic):
     """
@@ -185,11 +185,11 @@ class BlueskyComicStrip(ComicStrip):
                         self.captions.append(image.alt)
                     else:
                         self.captions.append("")
-        self.date = datetime.datetime.fromisoformat(post_data.value.created_at)
+        self.date = datetime.datetime.fromisoformat(post_data.value.created_at[0:-1])
 
     def _transform_images(self):
         self.transformed_images = self.images
     
 
-BlueskyComic.strip_cls = BlueskyComicStrip
-register_comic_class("bsky.app", BlueskyComic)
+BlueskyComicStrip.collection_cls = BlueskyComic
+register_comic_class("bsky.app", BlueskyComicStrip)

src/comic_download/comic_strip.py

@@ -113,7 +113,7 @@ A lock for enforcing thread safety when loading the comic index file.
 
 def read_index(base_path: Path):
     """
-    Saves the strip index to the same base path we download comic strips to.
+    Saves the strip index to the same base path we download comic books to.
     It is saved to "index.json."
 
     :param base_path: The folder to save the index to.
@@ -136,7 +136,7 @@ def read_index(base_path: Path):
 
 def save_index(base_path: Path):
     """
-    Saves the strip index to the same base path we download comic strips to.
+    Saves the strip index to the same base path we download comic books to.
     It is saved to "index.json."
 
     :param base_path: The folder to save the index to.
@@ -149,38 +149,32 @@ def save_index(base_path: Path):
             json.dump(strip_index, index_fp)
 
 def index_strip(strip):
-
     """
-    Registers a comic to the index. This does not save the comic index.
+    Registers a book to the index. This does not save the index.
 
-    :param strip: The comic strip to index
+    :param strip: The comic book to index
     """
     global strip_index
     global _index_loaded
     global _index_lock
     with _index_lock:
-        if not strip.comic.get_identifier_string() in strip_index:
-            strip_index[strip.comic.get_identifier_string()] = {}
-        strip_index[strip.comic.get_identifier_string()][strip.get_identifier_string()] = strip.get_filename()
+        strip_index[str(strip)] = strip.get_filename()
 
-def is_strip_present(comic, base_path: Path, suffix: str, identifier) -> bool:
+def is_strip_present(comic, base_path: Path, suffix: str) -> bool:
     """
-    Checks to see if a given strip has been saved to the file.
+    Checks to see if a given book has been saved to the file.
 
-    :param comic: The comic object that the strip belongs to.
+    :param comic: The comic book object to check.
     :param base_path: The folder we expect the strip to show up in.
     :param suffix: The type suffix we want to check (i.e. ".cbz")
-    :param identifier: The identifier to check.
     :returns: True if the strip file has been saved.
     """
     global strip_index
     global _index_loaded
     global _index_lock
-    if not comic.get_identifier_string() in strip_index:
+    if not str(comic) in strip_index:
         return False
-    if not get_identifier_string(identifier) in strip_index[comic.get_identifier_string()]:
-        return False
-    path = Path(base_path, strip_index[comic.get_identifier_string()][get_identifier_string(identifier)] + suffix)
+    path = Path(base_path, strip_index[str(comic)] + suffix)
     return path.exists()
             
 
@@ -224,7 +218,7 @@ class ImageRepo(ABC):
 
     def get_identifier_string(self):
         """
-        Obtains a file-safe string representation of the identifer. If the identifier is a list or tuple, the
+        Obtains a file-safe string representation of the identifier. If the identifier is a list or tuple, the
         elements will be joined by a dash character.
 
         :returns: The identifier in string form.
@@ -265,7 +259,7 @@ class ImageRepo(ABC):
         with self._load_lock:
             if not self._data_loaded:
                 self._load_data()
-                logging.info("Completed loading of %s", self.get_identifier_string())
+                logging.info("Completed loading of %s", repr(self))
             self._data_loaded = True
             self._load_lock.notify_all()
 
@@ -314,9 +308,9 @@ class ImageRepo(ABC):
         with self._download_lock:
             # Checks to see if we need to download and that one is not already in progress
             if self.image_urls and not self.images:
-                logging.info("Downloading %s", self.get_identifier_string())
+                logging.info("Downloading %s", repr(self))
                 self._download_data()
-                logging.info("Completed downloading of %s", self.get_identifier_string())
+                logging.info("Completed downloading of %s", repr(self))
             self._data_downloaded = True
             self._download_lock.notify_all()
 
@@ -356,8 +350,8 @@ class ImageRepo(ABC):
             elif type(self.image_urls) == list:
                 iterator = range(len(self.image_urls))
             for name in iterator:
-                logging.info("    Downloading repository %s resource %s", self.get_identifier_string(), name)
-                image_path = NamedTemporaryFile(mode='wb', suffix=str(name), prefix=self.get_identifier_string(), delete = False)
+                logging.info("    Downloading repository %s resource %s", repr(self), name)
+                image_path = NamedTemporaryFile(mode='wb', suffix=str(name), prefix=str(self), delete = False)
                 result = requests.get(self.image_urls[name], headers=self.download_headers)
                 result.raise_for_status()
                 # Handles necessary transformations for a URL (i.e., redirections)
@@ -369,8 +363,14 @@ class ImageRepo(ABC):
                 else:
                     self.images[name] = image_path
 
+    def __str__(self):
+        return str(self.__class__.__name__) + "__" + self.get_identifier_string()
 
-class Comic(ImageRepo, ABC):
+    def __repr__(self):
+        return "<" + str(self.__class__.__name__) + " " + self.get_identifier_string() + ">"
+        
+
+class ComicCollection(ImageRepo, ABC):
     """
     A generic representation of a comic collection. Comic-wide resources are stored here.
     """
@@ -394,7 +394,7 @@ class Comic(ImageRepo, ABC):
     @classmethod
     def create_from_url(cls, url):
         """
-        Creates a Comic instance from a given URL
+        Creates a ComicCollection instance from a given URL
         """
         pass
 
@@ -432,33 +432,33 @@ class Comic(ImageRepo, ABC):
         """
         pass
 
-    def create_strip(self, identifier):
-        """
-        Creates a new ComicStrip object.
+    def __str__(self):
+        return self.__class__.__name__ + "__" + self.get_identifier_string()
 
-        The class variable #strip_cls must be set for this to work.
-        """
-        return self.strip_cls(self, identifier)
+    def __repr__(self):
+        if self.title:
+            return "<" + str(self.__class__.__name__) + " " + self.title + " (" + self.get_identifier_string() + ")>"
+        else:
+            return "<" + str(self.__class__.__name__) + " " + self.get_identifier_string() + ">"
 
 
-class ComicStrip(ImageRepo, ABC):
+class ComicBook(ImageRepo, ABC):
     """
     A generic representation of a single comic strip or issue.
     """
 
-    def __init__(self, comic, identifier):
+    def __init__(self, identifier):
         """
         Creates a comic strip
 
-        :param comic: The `Comic` object that this strip is part of.
         :param indentifier: The globally unique identifier used to find the strip on the website. Can be a tuple.
         """
         super().__init__(identifier, list)
 
-        self.comic = comic
-        """The comic that this strip is part of."""
         self.title = None
         """The title of the comic. Empty until the comic data is loaded."""
+        self.series = None
+        """The series that this comic is a part of. Empty until the comic data is loaded."""
         self.image_urls = []
         """A list of URLs we can download the comic panels from, in order. Empty until the comic data is loaded."""
         self._image_paths = []
@@ -474,27 +474,34 @@ class ComicStrip(ImageRepo, ABC):
         self._transformed = False
         """A flag keeping track of whether the strip transformation took place."""
 
+    @classmethod
+    def create_from_url(cls, url):
+        """
+        Creates a Comic instance from a given URL
+        """
+        pass
+
     def get_filename(self):
         """
         Obtains the name of the final export (not including the stem). Calling this method requires the data be loaded first.
 
-        :returns: A human-friendly file, like "05 - Riddles in the Dark" or "2025-06-01 - Chapter 5."
+        :returns: A human-friendly filename, like "05 - Riddles in the Dark" or "2025-06-01 - Chapter 5."
         """
-        prefix_num_form = "#{:02}"
-        if type(self.identifier) == int:
-            prefix = prefix_num_form.format(self.identifier)
-        elif (type(self.identifier) == list or type(self.identifier) == tuple) and type(self.identifier[-1]) == int:
-            prefix = prefix_num_form.format(self.identifier[-1])
-        elif type(self.date) == date:
-            prefix = self.date.strftime("#%Y%m%d")
-        elif type(self.date) == datetime:
-            prefix = self.date.date().strftime("#%Y%m%d")
-        else:
-            prefix = self.get_identifier_string()
         if self.title:
-            return (file_safe_string(self.comic.title) + " " + prefix + " - " + file_safe_string(self.title))[0:250]
+            return file_safe_string(self.title)[0:250]
         else:
-            return prefix
+            prefix_num_form = "#{:02}"
+            if type(self.identifier) == int:
+                prefix = prefix_num_form.format(self.identifier)
+            elif (type(self.identifier) == list or type(self.identifier) == tuple) and type(self.identifier[-1]) == int:
+                prefix = prefix_num_form.format(self.identifier[-1])
+            elif type(self.date) == date:
+                prefix = self.date.strftime("#%Y%m%d")
+            elif type(self.date) == datetime:
+                prefix = self.date.date().strftime("#%Y%m%d")
+            else:
+                prefix = self.get_identifier_string()
+            return file_safe_string(self.__name__ + " - " + prefix)
 
     def get_package_path(self, base_path: Path):
         """
@@ -503,25 +510,13 @@ class ComicStrip(ImageRepo, ABC):
         :param base_path: The folder to save comics to.
         :returns: The path to save to.
         """
-        return Path(base_path, file_safe_string(self.comic.title), f"{self.get_filename()}.cbz")
+        filename = self.get_filename()
+        return Path(base_path, filename, f"{filename}.cbz")
 
     def load_data(self):
-        self.comic.load_data()
         super().load_data()
         index_strip(self)
 
-    def download_data(self):
-        self.comic.download_data()
-        super().download_data()
-
-    def await_load(self):
-        self.comic.await_load()
-        super().await_load()
-
-    def await_download(self):
-        self.comic.await_download()
-        super().await_download()
-
     @abstractmethod
     def _load_data(self):
         """
@@ -558,7 +553,7 @@ class ComicStrip(ImageRepo, ABC):
         soup = BeautifulSoup('<?xml version="1.0" encoding="utf-8"?><ComicInfo></ComicInfo>', features="xml")
         info_tag = soup.find("ComicInfo")
         info_tag.append(soup.new_tag("Title", string=self.title))
-        info_tag.append(soup.new_tag("Series", string=self.comic.title))
+        info_tag.append(soup.new_tag("Series", string=self.series))
         number_el = soup.new_tag("Number")
         if type(self.identifier) == int:
             number_el.string = str(self.identifier)
@@ -570,13 +565,13 @@ class ComicStrip(ImageRepo, ABC):
             info_tag.append(soup.new_tag("Year", string=str(self.date.year)))
             info_tag.append(soup.new_tag("Month", string=str(self.date.month)))
             info_tag.append(soup.new_tag("Day", string=str(self.date.day)))
-        if self.comic.author:
-            if type(self.comic.author) == str:
-                info_tag.append(soup.new_tag("Writer", string=self.comic.author))
-            elif type(self.comic.author) == list:
+        if self.author:
+            if type(self.author) == str:
+                info_tag.append(soup.new_tag("Writer", string=self.author))
+            elif type(self.author) == list:
                 authors = {}
                 writer_string = ""
-                for author in self.comic.author:
+                for author in self.author:
                     author_class = None
                     if type(author) == str:
                         author_name = author
@@ -609,37 +604,45 @@ class ComicStrip(ImageRepo, ABC):
         info_tag.append(soup.new_tag("PageCount", string=str(len(self.transformed_images))))
         return str(soup)
 
-    def package_data(self, base_path: Path):
+    def package_data(self, base_path: Path, plain: bool = False):
         """
         Compresses all the data into a cbz file.
+
+        :param base_path: The path to save all downloads to.
+        :param plain: If true, we will save the images as downloaded, without any transformations.
         """
         if not self.is_loaded():
-            raise SequenceException("Cannot package comic strip before strip data has been fully loaded.")
+            raise SequenceException("Cannot package comic book before data has been fully loaded.")
         if not self.is_downloaded():
-            raise SequenceException("Cannot package comic strip before strip data has been fully downloaded.")
-        if not self.comic.is_loaded():
-            raise SequenceException("Cannot package comic strip before comic data has been fully loaded.")
-        if not self.comic.is_downloaded():
-            raise SequenceException("Cannot package comic strip before comic data has been fully downloaded.")
+            raise SequenceException("Cannot package comic book before data has been fully downloaded.")
         if not self.transformed_images:
-            if not self._transformed:
-                if self._transform_lock._lock.locked():
-                    # Await for the existing transform to complete
-                    self._transform_lock.wait()
-                else:
-                    # Run the transformation outselves
-                    with self._transform_lock:
-                        self._transform_images()
-                        self._transformed = True
-                        self._transform_lock.notify_all()
+            if plain:
+                self.transformed_images = self.images
+            else:
+                if not self._transformed:
+                    if self._transform_lock._lock.locked():
+                        # Await for the existing transform to complete
+                        self._transform_lock.wait()
+                    else:
+                        # Run the transformation outselves
+                        with self._transform_lock:
+                            self._transform_images()
+                            self._transformed = True
+                            self._transform_lock.notify_all()
         save_path = self.get_package_path(base_path)
         save_path.parent.mkdir(parents=True, exist_ok=True)
         with ZipFile(self.get_package_path(base_path), 'w') as comic_zip:
             for i in range(len(self.transformed_images)):
                 image = self.transformed_images[i]
                 image_path = Path(image.name)
+                suffix = image_path.suffix
+                if len(suffix) > 5:
+                    # There is something fishy going on, so let us just use the default
+                    suffix = None
+                if not suffix:
+                    suffix = ".png"
                 logging.info("Packaging %s" % image_path.suffix)
-                with open(image.name, 'rb') as image_stream, comic_zip.open(str(i + 1) + (image_path.suffix or '.png'), 'w') as zip_stream:
+                with open(image.name, 'rb') as image_stream, comic_zip.open(str(i + 1) + (suffix), 'w') as zip_stream:
                     zip_stream.write(image_stream.read())
             # Add a ComicInfo file
             comic_info = self.create_comic_info()
@@ -655,6 +658,128 @@ class ComicStrip(ImageRepo, ABC):
             if image_path.exists():
                 image_path.unlink()
 
+    def __repr__(self):
+        if self.title:
+            return "<" + str(self.__class__.__name__) + " " + self.title + " (" + self.get_identifier_string() + ")>"
+        else:
+            return "<" + str(self.__class__.__name__) + " " + self.get_identifier_string() + ">"
+
+class ComicStrip(ComicBook, ABC):
+    """
+    A generic representation of an issue in a comic series. Unlike the base
+    ComicBook class, these objects are tied to a ComicCollection instance
+    and derive some data from that class.
+    """
+    def __init__(self, comic, identifier):
+        """
+        Creates a comic strip.
+
+        :param comic: The `ComicCollection` object that this strip is part of.
+        :param indentifier: The collection-unique identifier used to find the strip on the website. Can be a tuple.
+        """
+        super().__init__(identifier)
+
+        self.comic = comic
+
+    @classmethod
+    def create_from_url(cls, url, collection):
+        """
+        Creates a Comic instance from a given URL
+        """
+        return collection.create_from_url(url)
+
+    @property
+    def author(self):
+        """
+        The author(s) of the comic. Can be a string for a name, a list of names, or a list of objects containing the names under "name" and role under "role".
+
+        For Comic Strips, this references back to the main comic series author.
+        """
+        return self.comic.author
+
+    @author.setter
+    def author(self, x):
+        pass
+
+    @property
+    def series(self) -> str:
+        """The series that this comic is a part of."""
+        return self.comic.title
+
+    @series.setter
+    def series(self, x):
+        pass
+
+    def get_filename(self):
+        """
+        Obtains the name of the final export (not including the stem). Calling this method requires the data be loaded first.
+
+        :returns: A human-friendly file, like "05 - Riddles in the Dark" or "2025-06-01 - Chapter 5."
+        """
+        prefix_num_form = "#{:02}"
+        if type(self.identifier) == int:
+            prefix = prefix_num_form.format(self.identifier)
+        elif (type(self.identifier) == list or type(self.identifier) == tuple) and type(self.identifier[-1]) == int:
+            prefix = prefix_num_form.format(self.identifier[-1])
+        elif type(self.date) == date:
+            prefix = self.date.strftime("#%Y%m%d")
+        elif type(self.date) == datetime:
+            prefix = self.date.date().strftime("#%Y%m%d")
+        else:
+            prefix = self.get_identifier_string()
+        if self.title:
+            return (file_safe_string(self.comic.title) + " " + prefix + " - " + file_safe_string(self.title))[0:250]
+        else:
+            return prefix
+
+    def get_package_path(self, base_path: Path):
+        """
+        Obtains the path to save the comic archive to.
+
+        :param base_path: The folder to save comics to.
+        :returns: The path to save to.
+        """
+        return Path(base_path, file_safe_string(self.comic.title), f"{self.get_filename()}.cbz")
+
+    def load_data(self):
+        self.comic.load_data()
+        super().load_data()
+
+    def download_data(self):
+        self.comic.download_data()
+        super().download_data()
+
+    def await_load(self):
+        self.comic.await_load()
+        super().await_load()
+
+    def await_download(self):
+        self.comic.await_download()
+        super().await_download()
+
+    def package_data(self, base_path: Path, plain: bool = False):
+        if not self.comic.is_loaded():
+            raise SequenceException("Cannot package comic strip before comic data has been fully loaded.")
+        if not self.comic.is_downloaded():
+            raise SequenceException("Cannot package comic strip before comic data has been fully downloaded.")
+        super().package_data(base_path, plain)
+
+    def __str__(self):
+        return self.__class__.__name__ + "__" + self.comic.get_identifier_string() + "__" + self.get_identifier_string()
+
+    def __repr__(self):
+        representation = "<" + str(self.__class__.__name__) + " "
+        if self.comic.title:
+            representation += self.comic.title + " (" + self.comic.get_identifier_string() + "): "
+        else:
+            representation += self.comic.get_identifier_string() + ": "
+        if self.title:
+            representation += self.title + " (" + self.get_identifier_string() + ")"
+        else:
+            representation += self.comic.get_identifier_string()
+        representation += ">"
+        return representation
+
 class URLFormat:
     """An internal class used to help sort URLs based on subdomains and paths"""
     def __init__(self, url: str):
@@ -736,7 +861,7 @@ comic_registry = {}
 _registry_subdomains = []
 """An internal list keeping track of the order we should use to find the right parser (priority is last)"""
 
-def register_comic_class(url: str, comic_cls: type[Comic]):
+def register_comic_class(url: str, comic_cls: type[ComicBook]):
     """
     Registers a comic type.
 
@@ -769,7 +894,7 @@ def register_comic_class(url: str, comic_cls: type[Comic]):
     comic_registry[url_f] = comic_cls
     bisect.insort(_registry_subdomains, url_f)
 
-def find_comic_class(url: str) -> type[Comic]:
+def find_comic_class(url: str) -> type[ComicBook]:
     """
     Finds the appropriate comic for a given URL.
 

src/comic_download/existential_comics.py

@@ -31,7 +31,7 @@ import requests
 from PIL import Image, ImageDraw, ImageFont
 from bs4 import BeautifulSoup
 
-from comic_download.comic_strip import Comic, ComicStrip, register_comic_class
+from comic_download.comic_strip import ComicCollection as Comic, ComicStrip, register_comic_class
 
 class ExistentialComic(Comic):
     """
@@ -233,5 +233,5 @@ class ExistentialComicStrip(ComicStrip):
             f_img.save(f_image_path.name)
             self.transformed_images.append(f_image_path)
 
-ExistentialComic.strip_cls = ExistentialComicStrip
-register_comic_class("existentialcomics.com", ExistentialComic)
+ExistentialComicStrip.collection_cls = ExistentialComic
+register_comic_class("existentialcomics.com", ExistentialComicStrip)

src/comic_download/xkcd.py

@@ -31,7 +31,7 @@ import requests
 from PIL import Image, ImageDraw, ImageFont
 from bs4 import BeautifulSoup
 
-from comic_download.comic_strip import Comic, ComicStrip, register_comic_class
+from comic_download.comic_strip import ComicCollection as Comic, ComicStrip, register_comic_class
 
 class XKCDComic(Comic):
     """
@@ -152,5 +152,5 @@ class XKCDComicStrip(ComicStrip):
                 self.transformed_images.append(f_image)
 
 
-XKCDComic.strip_cls = XKCDComicStrip
-register_comic_class("xkcd.com", XKCDComic)
+XKCDComicStrip.collection_cls = XKCDComic
+register_comic_class("xkcd.com", XKCDComicStrip)