Satisfy black

repo2docker/buildpacks/r.py

@@ -192,7 +192,9 @@ class RBuildPack(PythonBuildPack):
                 # Ask for midnight UTC snapshot
                 json={
                     "repo": "all",
-                    "snapshot": (snapshot_date - datetime.timedelta(days=i)).strftime("%Y-%m-%dT00:00:00Z"),
+                    "snapshot": (snapshot_date - datetime.timedelta(days=i)).strftime(
+                        "%Y-%m-%dT00:00:00Z"
+                    ),
                 },
             ).json()
             # Construct a snapshot URL that will give us binary packages for Ubuntu Bionic (18.04)
@@ -201,35 +203,36 @@ class RBuildPack(PythonBuildPack):
                     "https://packagemanager.rstudio.com/all/__linux__/bionic/"
                     + snapshots["upsi"]
                 )
-        raise ValueError('No snapshot found for {} or {} days prior in packagemanager.rstudio.com'.format(
-            snapshot_date.strftime("%Y-%m-%d"), max_days_prior
-        ))
+        raise ValueError(
+            "No snapshot found for {} or {} days prior in packagemanager.rstudio.com".format(
+                snapshot_date.strftime("%Y-%m-%d"), max_days_prior
+            )
+        )
 
     def get_mran_snapshot_url(self, snapshot_date, max_days_prior=7):
         for i in range(max_days_prior):
             try_date = snapshot_date - datetime.timedelta(days=i)
             # Fall back to MRAN if packagemanager.rstudio.com doesn't have it
-            url = "https://mran.microsoft.com/snapshot/{}".format(
-                try_date.isoformat()
-            )
+            url = "https://mran.microsoft.com/snapshot/{}".format(try_date.isoformat())
             r = requests.head(url)
             if r.ok:
                 return url
         else:
-            raise ValueError('No snapshot found for {} or {} days prior in mran.microsoft.com'.format(
-                snapshot_date.strftime("%Y-%m-%d"), max_days_prior
-            ))
+            raise ValueError(
+                "No snapshot found for {} or {} days prior in mran.microsoft.com".format(
+                    snapshot_date.strftime("%Y-%m-%d"), max_days_prior
+                )
+            )
 
     def get_cran_mirror_url(self, snapshot_date):
         # Date after which we will use rspm + binary packages instead of MRAN + source packages
         rspm_cutoff_date = datetime.date(2022, 1, 1)
 
-        if snapshot_date >= rspm_cutoff_date or self.r_version >= V('4.1'):
+        if snapshot_date >= rspm_cutoff_date or self.r_version >= V("4.1"):
             return self.get_rspm_snapshot_url(snapshot_date)
         else:
             return self.get_mran_snapshot_url(snapshot_date)
 
-
     def get_devtools_snapshot_date(self):
         """
         Return date of snapshot to use for getting devtools install

tests/unit/test_r.py

@@ -80,7 +80,8 @@ def test_snapshot_rspm_date():
         snapshot_url = r.get_rspm_snapshot_url(requested)
         print(snapshot_url)
         assert snapshot_url.startswith(
-            "https://packagemanager.rstudio.com/all/__linux__/bionic/" + expected.strftime("%Y-%m-%d")
+            "https://packagemanager.rstudio.com/all/__linux__/bionic/"
+            + expected.strftime("%Y-%m-%d")
         )
 
     with pytest.raises(ValueError):