Fix CI (#664)

* fix format

* fix broken notebook

* revert and duppress deprecated warnings

papermill/s3.py

@@ -270,7 +270,7 @@ def cat(
         self,
         source,
         buffersize=None,
-        memsize=2 ** 24,
+        memsize=2**24,
         compressed=False,
         encoding='UTF-8',
         raw=False,
@@ -297,7 +297,7 @@ def cat(
             # try to read the file multiple times
             for i in range(100):
                 obj = self.s3.Object(key.bucket.name, key.name)
-                buffersize = buffersize if buffersize is not None else 2 ** 20
+                buffersize = buffersize if buffersize is not None else 2**20
 
                 if not size:
                     size = obj.content_length

papermill/tests/notebooks/broken2.ipynb

@@ -47,6 +47,10 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# To suppress a DeprecationWarning from IPython.\n",
+    "import warnings\n",
+    "warnings.filterwarnings('ignore')\n",
+    "\n",
     "# This causes multiple output elements to be created, one of type \"display_data\" and another of type \"error.\"\n",
     "from IPython.core.display import display, HTML\n",
     "display(HTML(\"<style>.container { width:100% !important; }</style>\"))\n",

papermill/tests/test_hdfs.py

@@ -14,6 +14,7 @@ def open_input_stream(self, path):
     def open_output_stream(self, path):
         return MockHadoopFile()
 
+
 class MockHadoopFile(object):
     def __init__(self):
         self._content = b'Content of notebook'
@@ -31,6 +32,7 @@ def write(self, new_content):
         self._content = new_content
         return 1
 
+
 class MockFileInfo(object):
     def __init__(self, path):
         self.path = path