chore: drop support for Python 3.6

Author: dvarrazzo

NEWS

@@ -1,6 +1,12 @@
 Current release
 ---------------
 
+What's new in psycopg 2.9.9
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+- Drop support for Python 3.6.
+
+
 What's new in psycopg 2.9.8
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

doc/src/install.rst

@@ -131,7 +131,7 @@ The current `!psycopg2` implementation supports:
 ..
     NOTE: keep consistent with setup.py and the /features/ page.
 
-- Python versions from 3.6 to 3.11
+- Python versions from 3.7 to 3.11
 - PostgreSQL server versions from 7.4 to 15
 - PostgreSQL client library version from 9.1
 

psycopg/python.h

@@ -27,8 +27,8 @@
 #ifndef PSYCOPG_PYTHON_H
 #define PSYCOPG_PYTHON_H 1
 
-#if PY_VERSION_HEX < 0x03060000
-#error "psycopg requires Python 3.6"
+#if PY_VERSION_HEX < 0x03070000
+#error "psycopg requires Python 3.7"
 #endif
 
 #include <structmember.h>

psycopg/typecast_datetime.c

@@ -103,18 +103,8 @@ _parse_inftz(const char *str, PyObject *curs)
         goto exit;
     }
 
-#if defined(PYPY_VERSION) || PY_VERSION_HEX < 0x03070000
-    {
-        PyObject *tzoff;
-        if (!(tzoff = PyDelta_FromDSU(0, 0, 0))) { goto exit; }
-        tzinfo = PyObject_CallFunctionObjArgs(tzinfo_factory, tzoff, NULL);
-        Py_DECREF(tzoff);
-        if (!tzinfo) { goto exit; }
-    }
-#else
     tzinfo = PyDateTime_TimeZone_UTC;
     Py_INCREF(tzinfo);
-#endif
 
     /* m.replace(tzinfo=tzinfo) */
     if (!(args = PyTuple_New(0))) { goto exit; }
@@ -178,11 +168,6 @@ _parse_noninftz(const char *str, Py_ssize_t len, PyObject *curs)
            appropriate tzinfo object calling the factory */
         Dprintf("typecast_PYDATETIMETZ_cast: UTC offset = %ds", tzsec);
 
-#if PY_VERSION_HEX < 0x03070000
-        /* Before Python 3.7 the timezone offset had to be a whole number
-         * of minutes, so round the seconds to the closest minute */
-        tzsec = 60 * (int)round(tzsec / 60.0);
-#endif
         if (!(tzoff = PyDelta_FromDSU(0, tzsec, 0))) { goto exit; }
         if (!(tzinfo = PyObject_CallFunctionObjArgs(
                 tzinfo_factory, tzoff, NULL))) {
@@ -270,11 +255,6 @@ typecast_PYTIME_cast(const char *str, Py_ssize_t len, PyObject *curs)
            appropriate tzinfo object calling the factory */
         Dprintf("typecast_PYTIME_cast: UTC offset = %ds", tzsec);
 
-#if PY_VERSION_HEX < 0x03070000
-        /* Before Python 3.7 the timezone offset had to be a whole number
-         * of minutes, so round the seconds to the closest minute */
-        tzsec = 60 * (int)round(tzsec / 60.0);
-#endif
         if (!(tzoff = PyDelta_FromDSU(0, tzsec, 0))) { goto exit; }
         if (!(tzinfo = PyObject_CallFunctionObjArgs(tzinfo_factory, tzoff, NULL))) {
             goto exit;

scripts/build/appveyor.py

@@ -660,7 +660,7 @@ def py_ver(self):
         For large values of 2, occasionally.
         """
         rv = os.environ['PY_VER']
-        assert rv in ('36', '37', '38', '39', '310', '311'), rv
+        assert rv in ('37', '38', '39', '310', '311'), rv
         return rv
 
     @property
@@ -742,7 +742,6 @@ def vs_ver(self):
         # Py 3.6--3.8 = VS Ver. 14.0 (VS 2015)
         # Py 3.9 = VS Ver. 16.0 (VS 2019)
         vsvers = {
-            '36': '14.0',
             '37': '14.0',
             '38': '14.0',
             '39': '16.0',

setup.py

@@ -52,7 +52,6 @@
 License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
 Programming Language :: Python
 Programming Language :: Python :: 3
-Programming Language :: Python :: 3.6
 Programming Language :: Python :: 3.7
 Programming Language :: Python :: 3.8
 Programming Language :: Python :: 3.9
@@ -551,7 +550,7 @@ def is_py_64():
       url="https://psycopg.org/",
       license="LGPL with exceptions",
       platforms=["any"],
-      python_requires='>=3.6',
+      python_requires='>=3.7',
       description=readme.split("\n")[0],
       long_description="\n".join(readme.split("\n")[2:]).lstrip(),
       classifiers=[x for x in classifiers.split("\n") if x],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = {3.6,3.7,3.8,3.9,3.10,3.11}
+envlist = {3.7,3.8,3.9,3.10,3.11}
 
 [testenv]
 commands = make check