add homework8

les8.py

@@ -0,0 +1,71 @@
+from instabot import Bot
+import os
+import dotenv
+
+
+class InstaChain:
+    users = {}
+    bot = Bot()
+
+    def __init__(self, user1, user2, max_depth, login, password):
+        self.user1 = user1
+        self.user2 = user2
+        self.max_depth = max_depth
+        self.login = login
+        self.password = password
+
+    def run(self):
+        self.bot.login(username=self.login, password=self.password)
+        user1_id = self.bot.get_user_id_from_username(self.user1)
+        user2_id = self.bot.get_user_id_from_username(self.user2)
+        self.users.update({user1_id: {'parent': None, 'depth': 0}})
+        self._find_friends(user2_id, self.max_depth)
+        return self._find_chain(user2_id)
+
+    def _find_friends(self, user2_id, max_depth, depth=1):
+        found = False
+        tmp_dict = {}
+        for key, value in self.users.items():
+            if found:
+                break
+            if value['depth'] == depth - 1:
+                user1_followers = self.bot.get_user_followers(key)
+                user1_following = self.bot.get_user_following(key)
+                user1_friends = list(set(user1_followers) & set(user1_following))
+                for friend in user1_friends:
+                    if not self.users.get(friend):
+                        tmp_dict.update({friend: {'parent': key, 'depth': depth}})
+                    if friend == user2_id:
+                        found = True
+                        break
+        self.users.update(tmp_dict)
+        if (depth != max_depth) and not found:
+            self._find_friends(user2_id, max_depth, depth=depth + 1)
+
+    def _find_chain(self, user2_id):
+        result = []
+        if not self.users.get(user2_id):
+            depth = self.users.get(user2_id)['depth']
+            user_id = user2_id
+            while True:
+                user_name = self.bot.get_username_from_user_id(user_id)
+                result.append(user_name)
+                user_id = self.users.get(user_id)['parent']
+                depth -= 1
+                if depth == -1:
+                    break
+        return result
+
+
+if __name__ == "__main__":
+    dotenv.load_dotenv(".env")
+    user1 = os.getenv("USER1")
+    user2 = os.getenv("USER2")
+    chain = InstaChain(
+        user1,
+        user2,
+        4,
+        login=os.getenv("INST_LOGIN"),
+        password=os.getenv("INST_PSWORD")
+    )
+    print(chain.run())