refactor: pyupgrade --py37-plus

django_coverage_plugin/plugin.py

@@ -17,7 +17,6 @@
 from django.template.base import Lexer, NodeList, Template, TextNode
 from django.template.defaulttags import VerbatimNode
 from django.templatetags.i18n import BlockTranslateNode
-from six.moves import range
 
 try:
     from django.template.base import TokenType
@@ -165,7 +164,7 @@ def sys_info(self):
         return [
             ("django_template_dir", self.django_template_dir),
             ("environment", sorted(
-                ("%s = %s" % (k, v))
+                ("{} = {}".format(k, v))
                 for k, v in os.environ.items()
                 if "DJANGO" in k
             )),
@@ -239,7 +238,7 @@ def line_number_range(self, frame):
             return -1, -1
 
         if SHOW_TRACING:
-            print("{!r}: {}".format(render_self, position))
+            print(f"{render_self!r}: {position}")
         s_start, s_end = position
         if isinstance(render_self, TextNode):
             first_line = render_self.s.splitlines(True)[0]
@@ -294,7 +293,7 @@ def get_line_map(self, filename):
 
 class FileReporter(coverage.plugin.FileReporter):
     def __init__(self, filename):
-        super(FileReporter, self).__init__(filename)
+        super().__init__(filename)
         # TODO: html filenames are absolute.
 
         self._source = None
@@ -303,15 +302,15 @@ def source(self):
         if self._source is None:
             try:
                 self._source = read_template_source(self.filename)
-            except (IOError, UnicodeError) as exc:
-                raise NoSource("Couldn't read {}: {}".format(self.filename, exc))
+            except (OSError, UnicodeError) as exc:
+                raise NoSource(f"Couldn't read {self.filename}: {exc}")
         return self._source
 
     def lines(self):
         source_lines = set()
 
         if SHOW_PARSING:
-            print("-------------- {}".format(self.filename))
+            print(f"-------------- {self.filename}")
 
         if django.VERSION >= (1, 9):
             lexer = Lexer(self.source())
@@ -389,7 +388,7 @@ def lines(self):
                 source_lines.update(range(lineno, lineno+num_lines))
 
             if SHOW_PARSING:
-                print("\t\t\tNow source_lines is: {!r}".format(source_lines))
+                print(f"\t\t\tNow source_lines is: {source_lines!r}")
 
         return source_lines
 

setup.py

@@ -7,7 +7,6 @@
 
 """
 
-import io
 import re
 from os.path import dirname, join
 
@@ -19,7 +18,7 @@ def read(*names, **kwargs):
 
     Parameter: encoding kwarg may be set
     """
-    return io.open(
+    return open(
         join(dirname(__file__), *names),
         encoding=kwargs.get('encoding', 'utf8')
     ).read()

tests/plugin_test.py

@@ -66,11 +66,11 @@ class DjangoPluginTestCase(StdStreamCapturingMixin, TempDirMixin, TestCase):
     """A base class for all our tests."""
 
     def setUp(self):
-        super(DjangoPluginTestCase, self).setUp()
+        super().setUp()
         self.template_directory = "templates"
 
     def _path(self, name=None):
-        return "{}/{}".format(self.template_directory, name or self.template_file)
+        return f"{self.template_directory}/{name or self.template_file}"
 
     def make_template(self, text, name=None):
         """Make a template with `text`.
@@ -191,14 +191,14 @@ def assert_analysis(self, executable, missing=None, name=None):
         self.assertEqual(
             executable,
             actual_executable,
-            "Executable lines aren't as expected: %r != %r" % (
+            "Executable lines aren't as expected: {!r} != {!r}".format(
                 executable, actual_executable,
             ),
         )
         self.assertEqual(
             missing or [],
             actual_missing,
-            "Missing lines aren't as expected: %r != %r" % (
+            "Missing lines aren't as expected: {!r} != {!r}".format(
                 missing, actual_missing,
             ),
         )

tests/test_engines.py

@@ -10,7 +10,7 @@
 
 class MultipleEngineTests(DjangoPluginTestCase):
     def setUp(self):
-        super(MultipleEngineTests, self).setUp()
+        super().setUp()
 
         engine = {
             'NAME': 'other',

tests/test_html.py

@@ -1,4 +1,3 @@
-# coding: utf8
 # Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
 # For details: https://github.com/nedbat/django_coverage_plugin/blob/master/NOTICE.txt
 

tests/test_simple.py

@@ -1,4 +1,3 @@
-# coding: utf8
 # Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
 # For details: https://github.com/nedbat/django_coverage_plugin/blob/master/NOTICE.txt
 
@@ -7,7 +6,7 @@
 from .plugin_test import DjangoPluginTestCase
 
 # 200 Unicode chars: snowman + poo.
-UNIUNI = u"\u26C4\U0001F4A9"*100
+UNIUNI = "\u26C4\U0001F4A9"*100
 if isinstance(UNIUNI, str):
     UNISTR = UNIUNI
 else:
@@ -64,8 +63,8 @@ def test_non_ascii(self):
             υηιcσɗє ιѕ тяιcку
             {{more}}!
             """)
-        text = self.run_django_coverage(context={'more': u'ɘboɔinU'})
-        self.assertEqual(text, u'υηιcσɗє ιѕ тяιcку\nɘboɔinU!\n')
+        text = self.run_django_coverage(context={'more': 'ɘboɔinU'})
+        self.assertEqual(text, 'υηιcσɗє ιѕ тяιcку\nɘboɔinU!\n')
         self.assert_analysis([1, 2])
         self.assertEqual(self.get_html_report(), 100)
         self.assertEqual(self.get_xml_report(), 100)
@@ -215,8 +214,8 @@ def test_verbatim(self):
         text = self.run_django_coverage()
         self.assertEqual(
             text,
-            u"1\n\n{{if dying}}Alive.{{/if}}\nsecond.\n"
-            u"{%third%}.UNIUNI\n\n7\n".replace(u"UNIUNI", UNIUNI)
+            "1\n\n{{if dying}}Alive.{{/if}}\nsecond.\n"
+            "{%third%}.UNIUNI\n\n7\n".replace("UNIUNI", UNIUNI)
         )
         self.assert_analysis([1, 2, 3, 4, 5, 7])
 

tests/test_source.py

@@ -88,7 +88,7 @@ def test_non_utf8_error(self):
         text = self.run_django_coverage(name="main.html")
         self.assertEqual(text, "Hello")
 
-        self.assert_measured_files("main.html", "static{}changelog.txt".format(os.sep))
+        self.assert_measured_files("main.html", f"static{os.sep}changelog.txt")
         self.assert_analysis([1], name="main.html")
         with self.assertRaisesRegex(NoSource, r"changelog.txt.*invalid start byte"):
             self.cov.html_report()
@@ -110,7 +110,7 @@ def test_non_utf8_omitted(self):
         text = self.run_django_coverage(name="main.html")
         self.assertEqual(text, "Hello")
 
-        self.assert_measured_files("main.html", "static{}changelog.txt".format(os.sep))
+        self.assert_measured_files("main.html", f"static{os.sep}changelog.txt")
         self.assert_analysis([1], name="main.html")
         self.cov.html_report()
 
@@ -131,7 +131,7 @@ def test_non_utf8_ignored(self):
         text = self.run_django_coverage(name="main.html")
         self.assertEqual(text, "Hello")
 
-        self.assert_measured_files("main.html", "static{}changelog.txt".format(os.sep))
+        self.assert_measured_files("main.html", f"static{os.sep}changelog.txt")
         self.assert_analysis([1], name="main.html")
         warn_msg = (
             "'utf-8' codec can't decode byte 0xf6 in position 2: " +