String formatting updated

src/pip/_internal/req/__init__.py

@@ -48,17 +48,18 @@ def install_given_reqs(
     """
 
     if to_install:
-        logger.info(
-            'Installing collected packages: %s',
-            ', '.join([req.name for req in to_install]),
+        msg = 'Installing collected packages: {}'.format(
+            ', '.join([req.name for req in to_install])
         )
+        logger.info(msg)
 
     installed = []
 
     with indent_log():
         for requirement in to_install:
             if requirement.should_reinstall:
-                logger.info('Attempting uninstall: %s', requirement.name)
+                logger.info('Attempting uninstall: {}'.format(
+                    requirement.name))
                 with indent_log():
                     uninstalled_pathset = requirement.uninstall(
                         auto_confirm=True

src/pip/_internal/req/req_tracker.py

@@ -60,7 +60,7 @@ def get_requirement_tracker():
                 TempDirectory(kind='req-tracker')
             ).path
             ctx.enter_context(update_env_context_manager(PIP_REQ_TRACKER=root))
-            logger.debug("Initialized build tracking at %s", root)
+            logger.debug("Initialized build tracking at {}".format(root))
 
         with RequirementTracker(root) as tracker:
             yield tracker

tests/functional/test_install_cleanup.py

@@ -14,12 +14,14 @@ def test_cleanup_after_install(script, data):
     Test clean up after installing a package.
     """
     script.pip(
-        'install', '--no-index', '--find-links=%s' % data.find_links, 'simple'
+        'install', '--no-index',
+        '--find-links={}'.format(data.find_links),
+        'simple'
     )
     build = script.venv_path / "build"
     src = script.venv_path / "src"
-    assert not exists(build), "build/ dir still exists: %s" % build
-    assert not exists(src), "unexpected src/ dir exists: %s" % src
+    assert not exists(build), "build/ dir still exists: {}".format(build)
+    assert not exists(src), "unexpected src/ dir exists: {}" .format(src)
     script.assert_no_temp()
 
 
@@ -31,7 +33,7 @@ def test_no_clean_option_blocks_cleaning_after_install(script, data):
     build = script.base_path / 'pip-build'
     script.pip(
         'install', '--no-clean', '--no-index', '--build', build,
-        '--find-links=%s' % data.find_links, 'simple', expect_temp=True,
+        '--find-links={}'.format(data.find_links), 'simple', expect_temp=True,
     )
     assert exists(build)
 
@@ -43,16 +45,14 @@ def test_cleanup_after_install_editable_from_hg(script, tmpdir):
     Test clean up after cloning from Mercurial.
 
     """
-    script.pip(
-        'install',
-        '-e',
-        '%s#egg=ScriptTest' %
-        local_checkout('hg+https://bitbucket.org/ianb/scripttest', tmpdir),
+    requirement = '{}#egg=ScriptTest'.format(
+        local_checkout('hg+https://bitbucket.org/ianb/scripttest', tmpdir)
     )
+    script.pip('install', '-e', requirement)
     build = script.venv_path / 'build'
     src = script.venv_path / 'src'
-    assert not exists(build), "build/ dir still exists: %s" % build
-    assert exists(src), "expected src/ dir doesn't exist: %s" % src
+    assert not exists(build), "build/ dir still exists: {}".format(build)
+    assert exists(src), "expected src/ dir doesn't exist: {}".format(src)
     script.assert_no_temp()
 
 
@@ -64,8 +64,8 @@ def test_cleanup_after_install_from_local_directory(script, data):
     script.pip('install', to_install)
     build = script.venv_path / 'build'
     src = script.venv_path / 'src'
-    assert not exists(build), "unexpected build/ dir exists: %s" % build
-    assert not exists(src), "unexpected src/ dir exist: %s" % src
+    assert not exists(build), "unexpected build/ dir exists: {}".format(build)
+    assert not exists(src), "unexpected src/ dir exist: {}".format(src)
     script.assert_no_temp()
 
 

tests/functional/test_install_index.py

@@ -17,7 +17,7 @@ def test_find_links_relative_path(script, data):
         cwd=data.root,
     )
     egg_info_folder = (
-        script.site_packages / 'parent-0.1-py%s.egg-info' % pyversion
+        script.site_packages / 'parent-0.1-py{}.egg-info'.format(pyversion)
     )
     initools_folder = script.site_packages / 'parent'
     assert egg_info_folder in result.files_created, str(result)
@@ -28,17 +28,17 @@ def test_find_links_requirements_file_relative_path(script, data):
     """Test find-links as a relative path to a reqs file."""
     script.scratch_path.joinpath("test-req.txt").write_text(textwrap.dedent("""
         --no-index
-        --find-links=%s
+        --find-links={}
         parent==0.1
-        """ % data.packages.replace(os.path.sep, '/')))
+        """ .format(data.packages.replace(os.path.sep, '/'))))
     result = script.pip(
         'install',
         '-r',
         script.scratch_path / "test-req.txt",
         cwd=data.root,
     )
     egg_info_folder = (
-        script.site_packages / 'parent-0.1-py%s.egg-info' % pyversion
+        script.site_packages / 'parent-0.1-py{}.egg-info'.format(pyversion)
     )
     initools_folder = script.site_packages / 'parent'
     assert egg_info_folder in result.files_created, str(result)
@@ -52,7 +52,7 @@ def test_install_from_file_index_hash_link(script, data):
     """
     result = script.pip('install', '-i', data.index_url(), 'simple==1.0')
     egg_info_folder = (
-        script.site_packages / 'simple-1.0-py%s.egg-info' % pyversion
+        script.site_packages / 'simple-1.0-py{}.egg-info'.format(pyversion)
     )
     assert egg_info_folder in result.files_created, str(result)
 
@@ -69,5 +69,5 @@ def test_file_index_url_quoting(script, data):
         str(result.stdout)
     )
     assert (
-        script.site_packages / 'simple-1.0-py%s.egg-info' % pyversion
+        script.site_packages / 'simple-1.0-py{}.egg-info'.format(pyversion)
     ) in result.files_created, str(result)

tests/functional/test_install_reqs.py

@@ -30,12 +30,13 @@ def test_requirements_file(script):
         'install', '-r', script.scratch_path / 'initools-req.txt'
     )
     assert (
-        script.site_packages / 'INITools-0.2-py%s.egg-info' %
-        pyversion in result.files_created
+        script.site_packages / 'INITools-0.2-py{}.egg-info'.format(
+            pyversion in result.files_created)
     )
     assert script.site_packages / 'initools' in result.files_created
     assert result.files_created[script.site_packages / other_lib_name].dir
-    fn = '%s-%s-py%s.egg-info' % (other_lib_name, other_lib_version, pyversion)
+    fn = '{}-{}-py{}.egg-info'.format(
+        other_lib_name, other_lib_version, pyversion)
     assert result.files_created[script.site_packages / fn].dir
 
 

tests/functional/test_show.py

@@ -15,7 +15,7 @@ def test_basic_show(script):
     lines = result.stdout.splitlines()
     assert len(lines) == 10
     assert 'Name: pip' in lines
-    assert 'Version: %s' % __version__ in lines
+    assert 'Version: {}'.format(__version__) in lines
     assert any(line.startswith('Location: ') for line in lines)
     assert 'Requires: ' in lines