fix newer linter warnings

Apparently bare excepts are literally Hitler, and we have some
new import sorting rules. Hooray!

nyaa/bencode.py

@@ -67,7 +67,7 @@ def _bencode_decode(file_object, decode_keys_as_utf8=True):
             elif c == _B_END:
                 try:
                     return int(int_bytes.decode('utf8'))
-                except Exception as e:
+                except Exception:
                     raise create_ex('Unable to parse int')
 
             # not a digit OR '-' in the middle of the int
@@ -109,7 +109,7 @@ def _bencode_decode(file_object, decode_keys_as_utf8=True):
                 raise create_ex('Unexpected input while reading string length: ' + repr(c))
         try:
             str_len = int(str_len_bytes.decode())
-        except Exception as e:
+        except Exception:
             raise create_ex('Unable to parse bytestring length')
 
         bytestring = file_object.read(str_len)

nyaa/forms.py

@@ -11,8 +11,9 @@ from wtforms import (BooleanField, HiddenField, PasswordField, SelectField, Stri
                      SubmitField, TextAreaField)
 from wtforms.validators import (DataRequired, Email, EqualTo, Length, Optional, Regexp,
                                 StopValidation, ValidationError)
+from wtforms.widgets import HTMLString  # For DisabledSelectField
 from wtforms.widgets import Select as SelectWidget  # For DisabledSelectField
-from wtforms.widgets import HTMLString, html_params  # For DisabledSelectField
+from wtforms.widgets import html_params
 
 import dns.exception
 import dns.resolver

nyaa/views/__init__.py

@@ -29,7 +29,7 @@ def _maintenance_mode_hook():
                 flask.flash(flask.Markup(message), 'danger')
                 try:
                     target_url = flask.url_for(endpoint)
-                except:
+                except Exception:
                     # Non-GET-able endpoint, try referrer or default to home page
                     target_url = flask.request.referrer or flask.url_for('main.home')
                 return flask.redirect(target_url)

nyaa/views/account.py

@@ -154,7 +154,7 @@ def password_reset(payload=None):
         s = get_serializer()
         try:
             request_timestamp, pw_hash, user_id = s.loads(payload)
-        except:
+        except Exception:
             return flask.abort(404)
 
         user = models.User.by_id(user_id)