diff --git a/pylib/tests/test_exporting.py b/pylib/tests/test_exporting.py
index 67e98852e..291030ac6 100644
--- a/pylib/tests/test_exporting.py
+++ b/pylib/tests/test_exporting.py
@@ -61,14 +61,14 @@ def test_export_anki():
     conf = col.decks.confForDid(did)
     assert conf["id"] != 1
     # connect to new deck
-    d2 = aopen(newname)
-    assert d2.cardCount() == 2
+    col2 = aopen(newname)
+    assert col2.cardCount() == 2
     # as scheduling was reset, should also revert decks to default conf
-    did = d2.decks.id("test", create=False)
+    did = col2.decks.id("test", create=False)
     assert did
-    conf2 = d2.decks.confForDid(did)
+    conf2 = col2.decks.confForDid(did)
     assert conf2["new"]["perDay"] == 20
-    dobj = d2.decks.get(did)
+    dobj = col2.decks.get(did)
     # conf should be 1
     assert dobj["conf"] == 1
     # try again, limited to a deck
@@ -78,8 +78,8 @@ def test_export_anki():
     os.unlink(newname)
     e.did = 1
     e.exportInto(newname)
-    d2 = aopen(newname)
-    assert d2.cardCount() == 1
+    col2 = aopen(newname)
+    assert col2.cardCount() == 1
 
 
 def test_export_ankipkg():
@@ -125,12 +125,12 @@ def test_export_anki_due():
     os.unlink(newname)
     e.exportInto(newname)
     # importing into a new deck, the due date should be equivalent
-    deck2 = getEmptyCol()
-    imp = Anki2Importer(deck2, newname)
+    col2 = getEmptyCol()
+    imp = Anki2Importer(col2, newname)
     imp.run()
-    c = deck2.getCard(c.id)
-    deck2.sched.reset()
-    assert c.due - deck2.sched.today == 1
+    c = col2.getCard(c.id)
+    col2.sched.reset()
+    assert c.due - col2.sched.today == 1
 
 
 # def test_export_textcard():
diff --git a/pylib/tests/test_find.py b/pylib/tests/test_find.py
index 1372a9885..0b22d6fdb 100644
--- a/pylib/tests/test_find.py
+++ b/pylib/tests/test_find.py
@@ -18,14 +18,14 @@ def test_findCards():
     note["Back"] = "cat"
     note.tags.append("monkey animal_1 * %")
     col.addNote(note)
-    f1id = note.id
+    n1id = note.id
     firstCardId = note.cards()[0].id
     note = col.newNote()
     note["Front"] = "goats are fun"
     note["Back"] = "sheep"
     note.tags.append("sheep goat horse animal11")
     col.addNote(note)
-    f2id = note.id
+    n2id = note.id
     note = col.newNote()
     note["Front"] = "cat"
     note["Back"] = "sheep"
@@ -91,7 +91,7 @@ def test_findCards():
     # nids
     assert col.findCards("nid:54321") == []
     assert len(col.findCards(f"nid:{note.id}")) == 2
-    assert len(col.findCards(f"nid:{f1id},{f2id}")) == 2
+    assert len(col.findCards(f"nid:{n1id},{n2id}")) == 2
     # templates
     assert len(col.findCards("card:foo")) == 0
     assert len(col.findCards('"card:card 1"')) == 4
@@ -273,14 +273,14 @@ def test_findDupes():
     note2["Front"] = "baz"
     note2["Back"] = "bar"
     col.addNote(note2)
-    f3 = col.newNote()
-    f3["Front"] = "quux"
-    f3["Back"] = "bar"
-    col.addNote(f3)
-    f4 = col.newNote()
-    f4["Front"] = "quuux"
-    f4["Back"] = "nope"
-    col.addNote(f4)
+    note3 = col.newNote()
+    note3["Front"] = "quux"
+    note3["Back"] = "bar"
+    col.addNote(note3)
+    note4 = col.newNote()
+    note4["Front"] = "quuux"
+    note4["Back"] = "nope"
+    col.addNote(note4)
     r = col.findDupes("Back")
     assert r[0][0] == "bar"
     assert len(r[0][1]) == 3
diff --git a/pylib/tests/test_importing.py b/pylib/tests/test_importing.py
index 6748ac6c7..44de46928 100644
--- a/pylib/tests/test_importing.py
+++ b/pylib/tests/test_importing.py
@@ -30,24 +30,24 @@ def clear_tempfile(tf):
 
 
 def test_anki2_mediadupes():
-    tmp = getEmptyCol()
+    col = getEmptyCol()
     # add a note that references a sound
-    n = tmp.newNote()
+    n = col.newNote()
     n["Front"] = "[sound:foo.mp3]"
     mid = n.model()["id"]
-    tmp.addNote(n)
+    col.addNote(n)
     # add that sound to media folder
-    with open(os.path.join(tmp.media.dir(), "foo.mp3"), "w") as note:
+    with open(os.path.join(col.media.dir(), "foo.mp3"), "w") as note:
         note.write("foo")
-    tmp.close()
+    col.close()
     # it should be imported correctly into an empty deck
     empty = getEmptyCol()
-    imp = Anki2Importer(empty, tmp.path)
+    imp = Anki2Importer(empty, col.path)
     imp.run()
     assert os.listdir(empty.media.dir()) == ["foo.mp3"]
     # and importing again will not duplicate, as the file content matches
     empty.remove_cards_and_orphaned_notes(empty.db.list("select id from cards"))
-    imp = Anki2Importer(empty, tmp.path)
+    imp = Anki2Importer(empty, col.path)
     imp.run()
     assert os.listdir(empty.media.dir()) == ["foo.mp3"]
     n = empty.getNote(empty.db.scalar("select id from notes"))
@@ -57,7 +57,7 @@ def test_anki2_mediadupes():
     empty.remove_cards_and_orphaned_notes(empty.db.list("select id from cards"))
     with open(os.path.join(empty.media.dir(), "foo.mp3"), "w") as note:
         note.write("bar")
-    imp = Anki2Importer(empty, tmp.path)
+    imp = Anki2Importer(empty, col.path)
     imp.run()
     assert sorted(os.listdir(empty.media.dir())) == ["foo.mp3", "foo_%s.mp3" % mid]
     n = empty.getNote(empty.db.scalar("select id from notes"))
@@ -67,7 +67,7 @@ def test_anki2_mediadupes():
     empty.remove_cards_and_orphaned_notes(empty.db.list("select id from cards"))
     with open(os.path.join(empty.media.dir(), "foo.mp3"), "w") as note:
         note.write("bar")
-    imp = Anki2Importer(empty, tmp.path)
+    imp = Anki2Importer(empty, col.path)
     imp.run()
     assert sorted(os.listdir(empty.media.dir())) == ["foo.mp3", "foo_%s.mp3" % mid]
     assert sorted(os.listdir(empty.media.dir())) == ["foo.mp3", "foo_%s.mp3" % mid]
@@ -76,24 +76,24 @@ def test_anki2_mediadupes():
 
 
 def test_apkg():
-    tmp = getEmptyCol()
+    col = getEmptyCol()
     apkg = str(os.path.join(testDir, "support/media.apkg"))
-    imp = AnkiPackageImporter(tmp, apkg)
-    assert os.listdir(tmp.media.dir()) == []
+    imp = AnkiPackageImporter(col, apkg)
+    assert os.listdir(col.media.dir()) == []
     imp.run()
-    assert os.listdir(tmp.media.dir()) == ["foo.wav"]
+    assert os.listdir(col.media.dir()) == ["foo.wav"]
     # importing again should be idempotent in terms of media
-    tmp.remove_cards_and_orphaned_notes(tmp.db.list("select id from cards"))
-    imp = AnkiPackageImporter(tmp, apkg)
+    col.remove_cards_and_orphaned_notes(col.db.list("select id from cards"))
+    imp = AnkiPackageImporter(col, apkg)
     imp.run()
-    assert os.listdir(tmp.media.dir()) == ["foo.wav"]
+    assert os.listdir(col.media.dir()) == ["foo.wav"]
     # but if the local file has different data, it will rename
-    tmp.remove_cards_and_orphaned_notes(tmp.db.list("select id from cards"))
-    with open(os.path.join(tmp.media.dir(), "foo.wav"), "w") as note:
+    col.remove_cards_and_orphaned_notes(col.db.list("select id from cards"))
+    with open(os.path.join(col.media.dir(), "foo.wav"), "w") as note:
         note.write("xyz")
-    imp = AnkiPackageImporter(tmp, apkg)
+    imp = AnkiPackageImporter(col, apkg)
     imp.run()
-    assert len(os.listdir(tmp.media.dir())) == 2
+    assert len(os.listdir(col.media.dir())) == 2
 
 
 def test_anki2_diffmodel_templates():
@@ -101,13 +101,13 @@ def test_anki2_diffmodel_templates():
     # changed, not the number of cards/fields
     dst = getEmptyCol()
     # import the first version of the model
-    tmp = getUpgradeDeckPath("diffmodeltemplates-1.apkg")
-    imp = AnkiPackageImporter(dst, tmp)
+    col = getUpgradeDeckPath("diffmodeltemplates-1.apkg")
+    imp = AnkiPackageImporter(dst, col)
     imp.dupeOnSchemaChange = True
     imp.run()
     # then the version with updated template
-    tmp = getUpgradeDeckPath("diffmodeltemplates-2.apkg")
-    imp = AnkiPackageImporter(dst, tmp)
+    col = getUpgradeDeckPath("diffmodeltemplates-2.apkg")
+    imp = AnkiPackageImporter(dst, col)
     imp.dupeOnSchemaChange = True
     imp.run()
     # collection should contain the note we imported
@@ -121,14 +121,14 @@ def test_anki2_diffmodel_templates():
 def test_anki2_updates():
     # create a new empty deck
     dst = getEmptyCol()
-    tmp = getUpgradeDeckPath("update1.apkg")
-    imp = AnkiPackageImporter(dst, tmp)
+    col = getUpgradeDeckPath("update1.apkg")
+    imp = AnkiPackageImporter(dst, col)
     imp.run()
     assert imp.dupes == 0
     assert imp.added == 1
     assert imp.updated == 0
     # importing again should be idempotent
-    imp = AnkiPackageImporter(dst, tmp)
+    imp = AnkiPackageImporter(dst, col)
     imp.run()
     assert imp.dupes == 1
     assert imp.added == 0
@@ -136,8 +136,8 @@ def test_anki2_updates():
     # importing a newer note should update
     assert dst.noteCount() == 1
     assert dst.db.scalar("select flds from notes").startswith("hello")
-    tmp = getUpgradeDeckPath("update2.apkg")
-    imp = AnkiPackageImporter(dst, tmp)
+    col = getUpgradeDeckPath("update2.apkg")
+    imp = AnkiPackageImporter(dst, col)
     imp.run()
     assert imp.dupes == 0
     assert imp.added == 0
diff --git a/pylib/tests/test_schedv1.py b/pylib/tests/test_schedv1.py
index 6586564b9..0e52b92c5 100644
--- a/pylib/tests/test_schedv1.py
+++ b/pylib/tests/test_schedv1.py
@@ -1066,21 +1066,21 @@ def test_reorder():
     col.sched.orderCards(1)
     assert note.cards()[0].due == 1
     # shifting
-    f3 = col.newNote()
-    f3["Front"] = "three"
-    col.addNote(f3)
-    f4 = col.newNote()
-    f4["Front"] = "four"
-    col.addNote(f4)
+    note3 = col.newNote()
+    note3["Front"] = "three"
+    col.addNote(note3)
+    note4 = col.newNote()
+    note4["Front"] = "four"
+    col.addNote(note4)
     assert note.cards()[0].due == 1
     assert note2.cards()[0].due == 2
-    assert f3.cards()[0].due == 3
-    assert f4.cards()[0].due == 4
-    col.sched.sortCards([f3.cards()[0].id, f4.cards()[0].id], start=1, shift=True)
+    assert note3.cards()[0].due == 3
+    assert note4.cards()[0].due == 4
+    col.sched.sortCards([note3.cards()[0].id, note4.cards()[0].id], start=1, shift=True)
     assert note.cards()[0].due == 3
     assert note2.cards()[0].due == 4
-    assert f3.cards()[0].due == 1
-    assert f4.cards()[0].due == 2
+    assert note3.cards()[0].due == 1
+    assert note4.cards()[0].due == 2
 
 
 def test_forget():
diff --git a/pylib/tests/test_schedv2.py b/pylib/tests/test_schedv2.py
index f41041860..a32da9ec0 100644
--- a/pylib/tests/test_schedv2.py
+++ b/pylib/tests/test_schedv2.py
@@ -1102,21 +1102,21 @@ def test_reorder():
     col.sched.orderCards(1)
     assert note.cards()[0].due == 1
     # shifting
-    f3 = col.newNote()
-    f3["Front"] = "three"
-    col.addNote(f3)
-    f4 = col.newNote()
-    f4["Front"] = "four"
-    col.addNote(f4)
+    note3 = col.newNote()
+    note3["Front"] = "three"
+    col.addNote(note3)
+    note4 = col.newNote()
+    note4["Front"] = "four"
+    col.addNote(note4)
     assert note.cards()[0].due == 1
     assert note2.cards()[0].due == 2
-    assert f3.cards()[0].due == 3
-    assert f4.cards()[0].due == 4
-    col.sched.sortCards([f3.cards()[0].id, f4.cards()[0].id], start=1, shift=True)
+    assert note3.cards()[0].due == 3
+    assert note4.cards()[0].due == 4
+    col.sched.sortCards([note3.cards()[0].id, note4.cards()[0].id], start=1, shift=True)
     assert note.cards()[0].due == 3
     assert note2.cards()[0].due == 4
-    assert f3.cards()[0].due == 1
-    assert f4.cards()[0].due == 2
+    assert note3.cards()[0].due == 1
+    assert note4.cards()[0].due == 2
 
 
 def test_forget():