Require at least Python 3.7

build/pkgs/python3/spkg-configure.m4

@@ -20,7 +20,7 @@ SAGE_SPKG_CONFIGURE([python3], [
       dnl Check if we can do venv with a system python3
       dnl instead of building our own copy.
       check_modules="sqlite3, ctypes, math, hashlib, crypt, readline, socket, zlib, distutils.core"
-      m4_pushdef([MIN_VERSION], [3.6.0])
+      m4_pushdef([MIN_VERSION], [3.7.0])
       m4_pushdef([LT_VERSION],  [3.10.0])
       AC_CACHE_CHECK([for python3 >= ]MIN_VERSION[, < ]LT_VERSION[ with modules $check_modules], [ac_cv_path_PYTHON3], [
         AS_IF([test x"$ac_path_PYTHON3" != x], [dnl checking explicitly specified $with_python

src/doc/en/installation/source.rst

@@ -88,7 +88,7 @@ computer:
 - **perl**: version 5.8.0 or later.
 - **ar** and **ranlib**: can be obtained as part of GNU binutils.
 - **tar**: GNU tar version 1.17 or later, or BSD tar.
-- **python**: Python 3, 3.6 or later, or Python 2.7 (deprecated).
+- **python**: Python 3.7 or later (Python 2.7 or Python <= 3.6 support is deprecated).
 
 Other versions of these may work, but they are untested.
 

tox.ini

@@ -352,7 +352,6 @@ setenv =
     macos-python3_pythonorg:  CONFIG_CONFIGURE_ARGS_1=--with-python=/Library/Frameworks/Python.framework/Versions/3.7/bin/python3
     # https://github.com/pypa/manylinux
     manylinux-standard:       CONFIG_CONFIGURE_ARGS_1=--with-system-python3=force --with-python=/opt/python/cp38-cp38/bin/python3
-    manylinux-python3.6:      CONFIG_CONFIGURE_ARGS_1=--with-system-python3=force --with-python=/opt/python/cp36-cp36m/bin/python3
     manylinux-python3.7:      CONFIG_CONFIGURE_ARGS_1=--with-system-python3=force --with-python=/opt/python/cp37-cp37m/bin/python3
     manylinux-python3.8:      CONFIG_CONFIGURE_ARGS_1=--with-system-python3=force --with-python=/opt/python/cp38-cp38/bin/python3
     manylinux-python3.9:      CONFIG_CONFIGURE_ARGS_1=--with-system-python3=force --with-python=/opt/python/cp39-cp39/bin/python3