Restore support for python 3.6

Python 3.6 EOL is 2021-12-23

Author: lcnittl

.pre-commit-config.yaml

@@ -35,7 +35,7 @@ repos:
     rev: v2.7.4
     hooks:
       - id: pyupgrade
-        args: [--py37-plus]
+        args: [--py36-plus]
   - repo: https://github.com/psf/black
     rev: 20.8b1
     hooks:

README.rst

@@ -34,6 +34,8 @@ Installation
 
 1. ``pip install sphinxcontrib-email``
 
+Support for python 3.6 will be dropped after its EOL on 2021-12-23.
+
 
 Configuration
 -------------

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [tool.black]
 line-length = 88
-target-version = ["py37", "py38"]
+target-version = ["py36", "py37", "py38"]
 include = '\.pyi?$'
 exclude = '''
 /(

setup.cfg

@@ -19,6 +19,7 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
@@ -34,7 +35,7 @@ packages = find_namespace:
 install_requires =
     Sphinx>=1.8
     lxml>=4.5.2
-python_requires = >=3.7
+python_requires = >=3.6
 include_package_data = True
 package_dir =
     = src

src/sphinxcontrib/email/__init__.py

@@ -1,6 +1,4 @@
-from __future__ import annotations
-
-from typing import Any
+from typing import Any, Dict
 
 import sphinx.util
 from sphinx.application import Sphinx
@@ -21,7 +19,7 @@
 logger = sphinx.util.logging.getLogger(__name__)
 
 
-def setup(app: Sphinx) -> dict[str, Any]:
+def setup(app: Sphinx) -> Dict[str, Any]:
     app.add_config_value(name="email_automode", default=False, rebuild="env")
     app.connect("html-page-context", html_page_context_handler)
     app.add_role("email", EmailRole())

src/sphinxcontrib/email/handlers.py

@@ -1,7 +1,6 @@
-from __future__ import annotations
-
 import html
 import urllib.parse
+from typing import Dict
 
 import lxml.html  # nosec  # noqa DUO107
 import sphinx.util
@@ -13,7 +12,7 @@
 
 
 def html_page_context_handler(
-    app: Sphinx, pagename: str, templatename: str, context: dict, doctree: bool
+    app: Sphinx, pagename: str, templatename: str, context: Dict, doctree: bool
 ):
     """Search html for 'mailto' links and obfuscate them"""
     if not app.config["email_automode"]:

src/sphinxcontrib/email/roles.py

@@ -1,6 +1,5 @@
-from __future__ import annotations
-
 import re
+from typing import List, Tuple
 
 import sphinx.util
 from docutils import nodes
@@ -14,7 +13,7 @@
 
 
 class EmailRole(SphinxRole):
-    def run(self) -> tuple[list[Node], list[system_message]]:
+    def run(self) -> Tuple[List[Node], List[system_message]]:
         """Role to obfuscate e-mail addresses.
 
         Handle addresses of the form

src/sphinxcontrib/email/utils.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 import re
 import textwrap
 import xml.sax.saxutils  # nosec