remove boto3 dependency

collectfast/boto.py

@@ -0,0 +1,13 @@
+from . import settings
+
+
+def is_boto3(storage):
+    return type(storage).__name__ == 'S3Boto3Storage'
+
+
+def reset_connection(storage):
+    """
+    Reset connection if thread pooling is enabled and storage is boto3.
+    """
+    if settings.threads and is_boto3(storage):
+        storage._connection = None

collectfast/management/commands/collectstatic.py

@@ -4,9 +4,9 @@
 
 from django.contrib.staticfiles.management.commands import collectstatic
 from django.utils.encoding import smart_str
-from storages.backends.s3boto3 import S3Boto3Storage
 
 from collectfast.etag import should_copy_file
+from collectfast.boto import reset_connection
 from collectfast import settings
 
 
@@ -78,9 +78,7 @@ def do_copy_file(self, args):
         """
         path, prefixed_path, source_storage = args
 
-        if settings.threads and isinstance(self.storage, S3Boto3Storage):
-            # reset connection
-            self.storage._connection = None
+        reset_connection(self.storage)
 
         if self.collectfast_enabled and not self.dry_run:
             try: