Fix linting errors

Style, unused imports, unused variables, etc. as reported by flake8.
Configuration for flake8 has been added to setup.cfg.

4 files changed, 16 insertions, 9 deletions

diff --git a/fbin/file_storage/base.py b/fbin/file_storage/base.py
index aa2c510..40c1588 100644
--- a/fbin/file_storage/base.py
+++ b/fbin/file_storage/base.py
@@ -1,7 +1,8 @@
 import datetime
 
 from ..db import db, File
-from .exceptions import *
+from .exceptions import FileSizeError
+
 
 class BaseStorage:
     def __init__(self, app):
diff --git a/fbin/file_storage/exceptions.py b/fbin/file_storage/exceptions.py
index 140221b..e949f20 100644
--- a/fbin/file_storage/exceptions.py
+++ b/fbin/file_storage/exceptions.py
@@ -1,2 +1,6 @@
-class StorageError(Exception): pass
-class FileSizeError(StorageError): pass
+class StorageError(Exception):
+    pass
+
+
+class FileSizeError(StorageError):
+    pass
diff --git a/fbin/file_storage/filesystem.py b/fbin/file_storage/filesystem.py
index b132264..5b4f0a3 100644
--- a/fbin/file_storage/filesystem.py
+++ b/fbin/file_storage/filesystem.py
@@ -4,6 +4,7 @@ import tempfile
 
 from .base import BaseStorage
 
+
 class Storage(BaseStorage):
     def __init__(self, app):
         super().__init__(app)
@@ -49,7 +50,7 @@ class Storage(BaseStorage):
         file_path, size = self.upload_file(uploaded_file, file_hash, user)
         try:
             return self.add_file(file_hash, uploaded_file.filename, size, user, ip)
-        except:
+        except:  # noqa: E722; we want to unlink and re-raise on all exceptions
             if os.path.exists(file_path):
                 os.unlink(file_path)
             raise
@@ -89,7 +90,7 @@ class Storage(BaseStorage):
     def store_thumbnail(self, f, stream):
         path = self.get_thumb_path(f)
         with open(path, 'wb') as f:
-            buf = stream.read(1024*10)
+            buf = stream.read(1024 * 10)
             while buf:
                 f.write(buf)
-                buf = stream.read(1024*10)
+                buf = stream.read(1024 * 10)
diff --git a/fbin/file_storage/s3.py b/fbin/file_storage/s3.py
index 71ee1e7..b372dd7 100644
--- a/fbin/file_storage/s3.py
+++ b/fbin/file_storage/s3.py
@@ -7,6 +7,7 @@ from flask import request, send_file
 
 from .base import BaseStorage
 
+
 class Storage(BaseStorage):
     def __init__(self, app):
         super().__init__(app)
@@ -35,7 +36,7 @@ class Storage(BaseStorage):
         obj, size = self.upload_file(uploaded_file, file_hash, user)
         try:
             return self.add_file(file_hash, uploaded_file.filename, size, user, ip)
-        except:
+        except:  # noqa: E722; we want to delete and re-raise on all exceptions
             obj.delete()
             raise
 
@@ -44,7 +45,7 @@ class Storage(BaseStorage):
         bucket = self.app.config['S3_BUCKET']
         obj = self.client.Object(bucket, key)
         try:
-            meta = obj.load()
+            obj.load()
             return True
         except botocore.exceptions.ClientError as e:
             if e.response['Error']['Code'] == '404':
@@ -96,4 +97,4 @@ class Storage(BaseStorage):
     def store_thumbnail(self, f, stream):
         bucket = self.client.Bucket(self.app.config['S3_THUMB_BUCKET'])
         key = self.get_object_key(f, thumb=True)
-        obj = bucket.upload_fileobj(Fileobj=stream, Key=key)
+        bucket.upload_fileobj(Fileobj=stream, Key=key)