Merge pull request #841 from CoffeaTeam/pre-commit-ci-update-config

build(pre-commit.ci): pre-commit autoupdate

.pre-commit-config.yaml

@@ -37,7 +37,7 @@ repos:
   - id: trailing-whitespace
 
 - repo: https://github.com/asottile/pyupgrade
-  rev: v3.6.0
+  rev: v3.7.0
   hooks:
   - id: pyupgrade
     args: ["--py36-plus"]
@@ -54,7 +54,7 @@ repos:
     exclude: coffea/processor/templates
 
 - repo: https://github.com/codespell-project/codespell
-  rev: v2.2.4
+  rev: v2.2.5
   hooks:
   - id: codespell
     args: ["--skip=*.ipynb","-L hist,Hist,nd,SubJet,subjet,Subjet,PTD,ptd,fPt,fpt"]

src/coffea/processor/parsl/detail.py

@@ -43,15 +43,15 @@ def derive_chunks(filename, treename, chunksize, ds, timeout=10):
 
     uproot.XRootDSource.defaults["parallel"] = False
 
-    afile = uproot.open({filename: None})
+    a_file = uproot.open({filename: None})
 
     tree = None
     if isinstance(treename, str):
-        tree = afile[treename]
+        tree = a_file[treename]
     elif isinstance(treename, Sequence):
         for name in reversed(treename):
-            if name in afile:
-                tree = afile[name]
+            if name in a_file:
+                tree = a_file[name]
     else:
         raise Exception(
             "treename must be a str or Sequence but is a %s!" % repr(type(treename))