Resolves #4

+ Added a catch for lectures that don't have a chapter

main.py

@@ -231,24 +231,8 @@ def download(url, path, filename):
     pbar.close()
     return file_size
 
-def parse(data):
+def process_lecture(lecture, lecture_path):
-    chapters = []
-
-    for obj in data:
-        if obj["_class"] == "chapter":
-            obj["lectures"] = []
-            chapters.append(obj)
-        elif obj["_class"] == "lecture" and obj["asset"]["asset_type"] == "Video":
-            chapters[-1]["lectures"].append(obj)
-    
-    for chapter in chapters:
-        chapter_dir = f"%s\\%s. %s" % (download_dir,chapters.index(chapter) + 1,sanitize(chapter["title"]))
-        if not os.path.exists(chapter_dir):
-            os.mkdir(chapter_dir)
-
-        for lecture in chapter["lectures"]:
     lecture_title = lecture["title"]
-            lecture_path = f"%s\\%s. %s.mp4" % (chapter_dir, chapter["lectures"].index(lecture) + 1,sanitize(lecture_title))
     lecture_asset = lecture["asset"]
     if lecture_asset["media_license_token"] == None:
         # not encrypted
@@ -272,6 +256,32 @@ def parse(data):
         else:
             print("> Lecture '%s' is already downloaded, skipping..." % lecture_title)
 
+def parse(data):
+    chapters = []
+    lectures = []
+
+    for obj in data:
+        if obj["_class"] == "chapter":
+            obj["lectures"] = []
+            chapters.append(obj)
+        elif obj["_class"] == "lecture" and obj["asset"]["asset_type"] == "Video":
+            try:
+                chapters[-1]["lectures"].append(obj)
+            except IndexError:
+                # This is caused by there not being a starting chapter
+                lectures.append(obj)
+                lecture_path = f"%s\\%s. %s.mp4" % (download_dir, lectures.index(obj) + 1, sanitize(obj["title"]))
+                process_lecture(obj, lecture_path)
+    
+    for chapter in chapters:
+        chapter_dir = f"%s\\%s. %s" % (download_dir,chapters.index(chapter) + 1,sanitize(chapter["title"]))
+        if not os.path.exists(chapter_dir):
+            os.mkdir(chapter_dir)
+
+        for lecture in chapter["lectures"]:
+            lecture_path = f"%s\\%s. %s.mp4" % (chapter_dir, chapter["lectures"].index(lecture) + 1,sanitize(lecture["title"]))
+            process_lecture(lecture, lecture_path)
+
 if __name__ == "__main__":
     if debug:
         # this is for development purposes so we dont need to make tons of requests when testing