Replace some for loops, and other minor changes (#8660)

* Replace for loop using the  operator

* Replace for loop with a generator expression inside any()

* Replace for loop with a dictionary comprehension

* Use list comprehension

* Simplify arguments for range()

* Change newfuncargs variable to in-line dictionary comprehension

* is_ancestor: return base.is_relative_to(query)

* Remove unneeded import of pathlib

* Try using PurePath

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Import PurePath on new line

* Revert and remove is_relative_to

Co-authored-by: Zachary Kneupper <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

src/_pytest/doctest.py

@@ -145,10 +145,7 @@ def _is_doctest(config: Config, path: Path, parent: Collector) -> bool:
     if path.suffix in (".txt", ".rst") and parent.session.isinitpath(path):
         return True
     globs = config.getoption("doctestglob") or ["test*.txt"]
-    for glob in globs:
-        if fnmatch_ex(glob, path):
-            return True
-    return False
+    return any(fnmatch_ex(glob, path) for glob in globs)
 
 
 class ReprFailDoctest(TerminalRepr):

src/_pytest/fixtures.py

@@ -276,7 +276,7 @@ def get_parametrized_fixture_keys(item: nodes.Item, scopenum: int) -> Iterator[_
 def reorder_items(items: Sequence[nodes.Item]) -> List[nodes.Item]:
     argkeys_cache: Dict[int, Dict[nodes.Item, Dict[_Key, None]]] = {}
     items_by_argkey: Dict[int, Dict[_Key, Deque[nodes.Item]]] = {}
-    for scopenum in range(0, scopenum_function):
+    for scopenum in range(scopenum_function):
         d: Dict[nodes.Item, Dict[_Key, None]] = {}
         argkeys_cache[scopenum] = d
         item_d: Dict[_Key, Deque[nodes.Item]] = defaultdict(deque)
@@ -296,7 +296,7 @@ def fix_cache_order(
     argkeys_cache: Dict[int, Dict[nodes.Item, Dict[_Key, None]]],
     items_by_argkey: Dict[int, Dict[_Key, "Deque[nodes.Item]"]],
 ) -> None:
-    for scopenum in range(0, scopenum_function):
+    for scopenum in range(scopenum_function):
         for key in argkeys_cache[scopenum].get(item, []):
             items_by_argkey[scopenum][key].appendleft(item)
 
@@ -377,10 +377,7 @@ def _fill_fixtures_impl(function: "Function") -> None:
         fm.session._setupstate.setup(function)
         request._fillfixtures()
         # Prune out funcargs for jstests.
-        newfuncargs = {}
-        for name in fi.argnames:
-            newfuncargs[name] = function.funcargs[name]
-        function.funcargs = newfuncargs
+        function.funcargs = {name: function.funcargs[name] for name in fi.argnames}
     else:
         request._fillfixtures()
 

src/_pytest/main.py

@@ -241,10 +241,7 @@ def is_ancestor(base: Path, query: Path) -> bool:
         """Return whether query is an ancestor of base."""
         if base == query:
             return True
-        for parent in base.parents:
-            if parent == query:
-                return True
-        return False
+        return query in base.parents
 
     # check if path is an ancestor of cwd
     if is_ancestor(Path.cwd(), Path(path).absolute()):

src/_pytest/python_api.py

@@ -130,7 +130,7 @@ def _check_type(self) -> None:
 
 def _recursive_list_map(f, x):
     if isinstance(x, list):
-        return list(_recursive_list_map(f, xi) for xi in x)
+        return [_recursive_list_map(f, xi) for xi in x]
     else:
         return f(x)