get_file_by_path works and added fullpath property

gapi/drive_api.py

@@ -55,12 +55,29 @@ class drive_file:
         self.api = api
         self.info = info
         self.parent = parent
+        self._fullpath = None
 
     @classmethod
     def from_id(cls,id,api,parent):
         info = api.service.files().get(fileId='root').execute()
         return cls(api,info,parent)
 
+    @property
+    def fullpath(self):
+        if self._fullpath is None:
+            if self.parent is None:
+                path = '/'
+            else:
+                path = pathjoin(self.parent.fullpath,self.name)
+            self._fullpath = path
+        return self._fullpath
+
+    def __str__(self):
+        return '{}@{}'.format(type(self).__name__,self.fullpath)
+
+    def __repr__(self):
+        return str(self)
+
 class drive_folder(drive_file):
     def __init__(self,
         api,
@@ -87,9 +104,9 @@ class drive_folder(drive_file):
         for child in child_list:
             name = child['name']
             if is_folder(child):
-                parent.folders[name] = drive_folder(self.api,child,self)
+                self.folders[name] = drive_folder(self.api,child,self)
             else:
-                parent.files[name] = drive_file(self.api,child,self)
+                self.files[name] = drive_file(self.api,child,self)
 
     def __list_children__(self):
         page_token = None
@@ -114,7 +131,6 @@ class drive_api(API):
         ):
         super().__init__('drive',scopes,app_name,client_secret_file,credentials_dir,version)
         self.root = drive_folder.from_id('root',self,None)
-        root
 
     def get_file_by_path(self,path,ret_file = True):
         if path == '/':