esp-idf/tools/python_version_checker.py

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# SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
#
# SPDX-License-Identifier: Apache-2.0
#
# Script for checking the compatibility of the Python interpreter with ESP-IDF.
#
# There are related tools/detect_python.{sh,fish} scripts which are called earlier when the paths are not properly
# set-up and they only intend to prefer the use of Python 3 over Python 2. Why not more? All possible executables
# (python3.6, python3.7, ...) cannot be hardcoded there and at the end, the user is responsible to set-up a system
# where "python" or "python3" of compatible version is available.
import sys
try:
# Python 2 is not supported anymore but still the old way of typing is used here in order to give a nice Python
# version failure and not a typing exception.
from typing import Iterable
except ImportError:
pass
OLDEST_PYTHON_SUPPORTED = (3, 6) # keep it as tuple for comparison with sys.version_info
def _ver_to_str(it): # type: (Iterable) -> str
return '.'.join(str(x) for x in it)
def is_supported(): # type: () -> bool
return sys.version_info[:2] >= OLDEST_PYTHON_SUPPORTED[:2]
def check(): # type: () -> None
if not is_supported():
raise RuntimeError('ESP-IDF supports Python {} or newer but you are using Python {}. Please upgrade your '
'installation as described in the documentation.'.format(_ver_to_str(OLDEST_PYTHON_SUPPORTED),
_ver_to_str(sys.version_info[:3])))