CPT-268 Upgrade to Python 3.9 (#39)

* CPT-268 Upgrade to Python 3.9

* CPT-268 Use pyenv 2.4.22

* CPT-268 Keep the old behavior of getaddresses by with strict=False

.python-version

@@ -1 +1 @@
-3.8.10
+3.9.21

docker/Dockerfile

@@ -92,7 +92,7 @@ ENV PYENV_ROOT="/.pyenv"
 ENV PATH="${PYENV_ROOT}/shims:${PYENV_ROOT}/bin:${PATH}"
 COPY .python-version .
 RUN PYTHON_VERSION="$(cat .python-version)" \
-    && git clone --depth 1 -b v2.4.1 https://github.com/pyenv/pyenv.git "${PYENV_ROOT}" \
+    && git clone --depth 1 -b v2.4.22 https://github.com/pyenv/pyenv.git "${PYENV_ROOT}" \
     && pyenv install --verbose ${PYTHON_VERSION} \
     && pyenv global ${PYTHON_VERSION} \
     && rm .python-version

odoo/tools/mail.py

@@ -3,6 +3,7 @@
 
 import base64
 import collections
+import functools
 import logging
 from lxml.html import clean
 import random
@@ -11,6 +12,7 @@
 import threading
 import time
 
+import email.utils
 from email.utils import getaddresses
 from lxml import etree
 from werkzeug import urls
@@ -22,6 +24,14 @@
 
 _logger = logging.getLogger(__name__)
 
+# JobRad: Upgrade to Python 3.9
+# Keep the old behavior of getaddresses by specifying strict=False:
+# https://docs.python.org/3.9/whatsnew/3.9.html#email
+# Note that this is not needed from Odoo 15 onwards:
+# https://github.com/jobrad-gmbh/odoo/blob/d7c0516e8c5fdda9661a74099a4085374595f758/odoo/tools/mail.py#L29
+if getattr(email.utils, 'supports_strict_parsing', False):
+    getaddresses = functools.partial(getaddresses, strict=False)
+
 #----------------------------------------------------------
 # HTML Sanitizer
 #----------------------------------------------------------