adds drive_download_contents() method to client

README.md

@@ -183,6 +183,16 @@ refresh_session = client.drive_refresh_session(item_id)
 close_session = client.drive_close_session(item_id)
 ```
 
+#### Download the contents of a specific item
+```
+contents_bytes = client.drive_download_contents(item_id)
+```
+
+#### Get a Drive item resource
+```
+drive_item_dict = client.drive_get_item(item_id)
+```
+
 #### Get worksheets
 ```
 get_worksheets = client.excel_get_worksheets(item_id)
@@ -254,4 +264,4 @@ update_range = client.excel_update_range(item_id, worksheets_id)
 ## Tests
 ```
 test/test.py
-```
+```

microsoftgraph/client.py

@@ -483,6 +483,22 @@ def drive_close_session(self, item_id, **kwargs):
         url = "https://graph.microsoft.com/beta/me/drive/items/{0}/workbook/closeSession".format(item_id)
         return self._post(url, **kwargs)
 
+    @token_required
+    def drive_download_contents(self, item_id, params=None, **kwargs):
+        url = "https://graph.microsoft.com/beta/me/drive/items/{0}/content".format(item_id)
+        return self._get(url, params=params, **kwargs)
+
+    @token_required
+    def drive_get_item(self, item_id, params=None, **kwargs):
+        url = "https://graph.microsoft.com/beta/me/drive/items/{0}".format(item_id)
+        return self._get(url, params=params, **kwargs)
+
+    @token_required
+    def drive_upload_item(self, item_id, params=None, **kwargs):
+        url = "https://graph.microsoft.com/beta/me/drive/items/{0}/content".format(item_id)
+        kwargs['headers'] = {'Content-Type': 'text/plain'}
+        return self._put(url, params=params, **kwargs)
+
     # Excel
     @token_required
     def excel_get_worksheets(self, item_id, params=None, **kwargs):
@@ -600,7 +616,7 @@ def _parse(self, response):
         if 'application/json' in response.headers['Content-Type']:
             r = response.json()
         else:
-            r = response.text
+            r = response.content
         if status_code in (200, 201, 202):
             return r
         elif status_code == 204:
@@ -648,4 +664,9 @@ def _parse(self, response):
         elif status_code == 509:
             raise exceptions.BandwidthLimitExceeded(r)
         else:
+            if r['error']['innerError']['code'] == 'lockMismatch':
+                # File is currently locked due to being open in the web browser
+                # while attempting to reupload a new version to the drive.
+                # Thus temporarily unavailable.
+                raise exceptions.ServiceUnavailable(r)
             raise exceptions.UnknownError(r)