diff --git a/repo2docker/contentproviders/__init__.py b/repo2docker/contentproviders/__init__.py
index 3e88bc93..b4c11878 100755
--- a/repo2docker/contentproviders/__init__.py
+++ b/repo2docker/contentproviders/__init__.py
@@ -3,7 +3,7 @@
 from .figshare import Figshare
 from .git import Git
 from .hydroshare import Hydroshare
+from .meca import Meca
 from .mercurial import Mercurial
 from .swhid import Swhid
 from .zenodo import Zenodo
-from .meca import Meca
diff --git a/repo2docker/contentproviders/meca.py b/repo2docker/contentproviders/meca.py
index 515b8360..e362a7e6 100644
--- a/repo2docker/contentproviders/meca.py
+++ b/repo2docker/contentproviders/meca.py
@@ -1,13 +1,16 @@
-from .base import ContentProvider
-from requests import Session
 import os
-from hashlib import md5
-from os import path
-import tempfile
 import shutil
+import tempfile
 import xml.etree.ElementTree as ET
-from zipfile import ZipFile, is_zipfile
+from hashlib import md5
+from os import path
 from urllib.parse import urlparse, urlunparse
+from zipfile import ZipFile, is_zipfile
+
+from requests import Session
+
+from .base import ContentProvider
+
 
 def get_hashed_slug(url, changes_with_content):
     """Return a unique slug that is invariant to query parameters in the url"""
@@ -18,6 +21,7 @@ def get_hashed_slug(url, changes_with_content):
 
     return "meca-" + md5(f"{stripped_url}-{changes_with_content}".encode()).hexdigest()
 
+
 def fetch_zipfile(session, url, dst_dir):
     resp = session.get(url, headers={"accept": "application/zip"}, stream=True)
     resp.raise_for_status()