Run pyflakes and fix a couple errors.

Author: Carreau

nbviewer/providers/__init__.py

@@ -83,7 +83,7 @@ def _load_provider_feature(feature, providers, **handler_names):
         try:
             # Ex: handler_names['url_handler']
             handler_names[provider_handler_key]
-        except KeyError as e:
+        except KeyError:
             continue
         else:
             # Ex: provider_handlers['url_handler'] = handler_names['url_handler']

nbviewer/providers/base.py

@@ -445,7 +445,7 @@ def write_error(self, status_code: int, **kwargs):
         # render the template
         try:
             html = self.render_status_code_template(status_code, **namespace)
-        except Exception as e:
+        except Exception:
             html = self.render_error_template(**namespace)
         self.set_header("Content-Type", "text/html")
         self.write(html)
@@ -561,7 +561,7 @@ async def cached_method(self, *args, **kwargs):
                 cached = pickle.loads(cached_pickle)
             else:
                 cached = None
-        except Exception as e:
+        except Exception:
             self.log.error("Exception getting %s from cache", short_url, exc_info=True)
             cached = None
 
@@ -631,7 +631,7 @@ def filter_formats(self, nb, raw):
             try:
                 if test is None or test(nb, raw):
                     yield (name, format)
-            except Exception as err:
+            except Exception:
                 self.log.info("Failed to test %s: %s", self.request.uri, name)
 
     # empty methods to be implemented by subclasses to make GET requests more modular

nbviewer/providers/dropbox/__init__.py

@@ -1 +1,3 @@
 from .handlers import uri_rewrites
+
+__all__ = ['uri_rewrites']

nbviewer/providers/gist/__init__.py

@@ -1,2 +1,4 @@
 from .handlers import default_handlers
 from .handlers import uri_rewrites
+
+__all__ = ['default_handlers', 'uri_rewrites']

nbviewer/providers/github/__init__.py

@@ -1,2 +1,4 @@
 from .handlers import default_handlers
 from .handlers import uri_rewrites
+
+__all__ = ['default_handlers', 'uri_rewrites']

nbviewer/providers/github/client.py

@@ -6,7 +6,6 @@
 # -----------------------------------------------------------------------------
 import json
 import os
-from urllib.parse import urlparse
 
 from tornado.httpclient import AsyncHTTPClient
 from tornado.httpclient import HTTPError

nbviewer/providers/github/handlers.py

@@ -432,7 +432,7 @@ async def deliver_notebook(
                     nbjson = filedata.decode("utf-8")
                 else:
                     nbjson = filedata
-            except Exception as e:
+            except Exception:
                 self.log.error("Failed to decode notebook: %s", raw_url, exc_info=True)
                 raise web.HTTPError(400)
 

nbviewer/providers/local/__init__.py

@@ -1,2 +1,4 @@
 from .handlers import default_handlers
 from .handlers import LocalFileHandler
+
+__all__ = ['default_handlers', 'LocalFileHandler']

nbviewer/providers/url/__init__.py

@@ -1,2 +1,4 @@
 from .handlers import default_handlers
 from .handlers import uri_rewrites
+
+__all__ = ['default_handlers', 'uri_rewrites']

nbviewer/providers/url/handlers.py

@@ -56,7 +56,7 @@ async def get_notebook_data(self, secure, netloc, url):
             rfp.set_url(robots_url)
             rfp.parse(robotstxt.splitlines())
             public = rfp.can_fetch("*", remote_url)
-        except httpclient.HTTPError as e:
+        except httpclient.HTTPError:
             self.log.debug(
                 "Robots.txt not available for {}".format(remote_url), exc_info=True
             )