diff --git a/src/_pytest/cacheprovider.py b/src/_pytest/cacheprovider.py
index a1200ce37..63503ed2e 100755
--- a/src/_pytest/cacheprovider.py
+++ b/src/_pytest/cacheprovider.py
@@ -179,45 +179,45 @@ class LFPlugin(object):
             self.lastfailed[report.nodeid] = True
 
     def pytest_collection_modifyitems(self, session, config, items):
-        if self.active:
-            if self.lastfailed:
-                previously_failed = []
-                previously_passed = []
-                for item in items:
-                    if item.nodeid in self.lastfailed:
-                        previously_failed.append(item)
-                    else:
-                        previously_passed.append(item)
-                self._previously_failed_count = len(previously_failed)
+        if not self.active:
+            return
 
-                if not previously_failed:
-                    # Running a subset of all tests with recorded failures
-                    # only outside of it.
-                    self._report_status = "%d known failures not in selected tests" % (
-                        len(self.lastfailed),
-                    )
+        if self.lastfailed:
+            previously_failed = []
+            previously_passed = []
+            for item in items:
+                if item.nodeid in self.lastfailed:
+                    previously_failed.append(item)
                 else:
-                    if self.config.getoption("lf"):
-                        items[:] = previously_failed
-                        config.hook.pytest_deselected(items=previously_passed)
-                    else:  # --failedfirst
-                        items[:] = previously_failed + previously_passed
+                    previously_passed.append(item)
+            self._previously_failed_count = len(previously_failed)
 
-                    noun = (
-                        "failure" if self._previously_failed_count == 1 else "failures"
-                    )
-                    suffix = " first" if self.config.getoption("failedfirst") else ""
-                    self._report_status = "rerun previous {count} {noun}{suffix}".format(
-                        count=self._previously_failed_count, suffix=suffix, noun=noun
-                    )
+            if not previously_failed:
+                # Running a subset of all tests with recorded failures
+                # only outside of it.
+                self._report_status = "%d known failures not in selected tests" % (
+                    len(self.lastfailed),
+                )
             else:
-                self._report_status = "no previously failed tests, "
-                if self.config.getoption("last_failed_no_failures") == "none":
-                    self._report_status += "deselecting all items."
-                    config.hook.pytest_deselected(items=items)
-                    items[:] = []
-                else:
-                    self._report_status += "not deselecting items."
+                if self.config.getoption("lf"):
+                    items[:] = previously_failed
+                    config.hook.pytest_deselected(items=previously_passed)
+                else:  # --failedfirst
+                    items[:] = previously_failed + previously_passed
+
+                noun = "failure" if self._previously_failed_count == 1 else "failures"
+                suffix = " first" if self.config.getoption("failedfirst") else ""
+                self._report_status = "rerun previous {count} {noun}{suffix}".format(
+                    count=self._previously_failed_count, suffix=suffix, noun=noun
+                )
+        else:
+            self._report_status = "no previously failed tests, "
+            if self.config.getoption("last_failed_no_failures") == "none":
+                self._report_status += "deselecting all items."
+                config.hook.pytest_deselected(items=items)
+                items[:] = []
+            else:
+                self._report_status += "not deselecting items."
 
     def pytest_sessionfinish(self, session):
         config = self.config
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 4542f06ab..d77561f85 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -282,7 +282,6 @@ class PytestPluginManager(PluginManager):
             known_marks = {m.name for m in getattr(method, "pytestmark", [])}
 
             for name in ("tryfirst", "trylast", "optionalhook", "hookwrapper"):
-
                 opts.setdefault(name, hasattr(method, name) or name in known_marks)
         return opts
 
diff --git a/src/_pytest/hookspec.py b/src/_pytest/hookspec.py
index 5a3eb282d..25c2c3cbc 100644
--- a/src/_pytest/hookspec.py
+++ b/src/_pytest/hookspec.py
@@ -227,7 +227,7 @@ def pytest_collectreport(report):
 
 
 def pytest_deselected(items):
-    """ called for test items deselected by keyword. """
+    """ called for test items deselected, e.g. by keyword. """
 
 
 @hookspec(firstresult=True)
diff --git a/src/_pytest/mark/structures.py b/src/_pytest/mark/structures.py
index aa69adad3..4cae97b71 100644
--- a/src/_pytest/mark/structures.py
+++ b/src/_pytest/mark/structures.py
@@ -304,7 +304,7 @@ class MarkGenerator(object):
                 for line in self._config.getini("markers"):
                     # example lines: "skipif(condition): skip the given test if..."
                     # or "hypothesis: tests which use Hypothesis", so to get the
-                    # marker name we we split on both `:` and `(`.
+                    # marker name we split on both `:` and `(`.
                     marker = line.split(":")[0].split("(")[0].strip()
                     self._markers.add(marker)
 
diff --git a/src/_pytest/terminal.py b/src/_pytest/terminal.py
index 2d14a7bdc..80a3b87a8 100644
--- a/src/_pytest/terminal.py
+++ b/src/_pytest/terminal.py
@@ -453,10 +453,10 @@ class TerminalReporter(object):
                 progress_length = len(" [100%]")
 
             self._progress_nodeids_reported.add(nodeid)
-            last_item = (
+            is_last_item = (
                 len(self._progress_nodeids_reported) == self._session.testscollected
             )
-            if last_item:
+            if is_last_item:
                 self._write_progress_information_filling_space()
             else:
                 w = self._width_of_current_line