Error early if executing python version doesn't meet documented minim…

…ums (ansible#34655)

* Error early if executing python version doesn't meet documented minimums. Fixes ansible#34597

* Make recommended enhancements

bin/ansible

@@ -41,6 +41,15 @@ from ansible.errors import AnsibleError, AnsibleOptionsError, AnsibleParserError
 from ansible.module_utils._text import to_text
 
 
+# Used for determining if the system is running a new enough python version
+# and should only restrict on our documented minimum versions
+_PY3_MIN = sys.version_info[:2] >= (3, 5)
+_PY2_MIN = (2, 6) <= sys.version_info[:2] < (3,)
+_PY_MIN = _PY3_MIN or _PY2_MIN
+if not _PY_MIN:
+ raise SystemExit('ERROR: Ansible requires a minimum of Python2 version 2.6 or Python3 version 3.5. Current version: %s' % ''.join(sys.version.splitlines()))
+
+
 class LastResort(object):
  # OUTPUT OF LAST RESORT
  def display(self, msg, log_only=None):

lib/ansible/module_utils/basic.py

@@ -232,6 +232,18 @@
 EXEC_PERM_BITS = 0o0111 # execute permission bits
 DEFAULT_PERM = 0o0666 # default file permission bits
 
+# Used for determining if the system is running a new enough python version
+# and should only restrict on our documented minimum versions
+_PY3_MIN = sys.version_info[:2] >= (3, 5)
+_PY2_MIN = (2, 6) <= sys.version_info[:2] < (3,)
+_PY_MIN = _PY3_MIN or _PY2_MIN
+if not _PY_MIN:
+ print(
+ '\n{"failed": true, '
+ '"msg": "Ansible requires a minimum of Python2 version 2.6 or Python3 version 3.5. Current version: %s"}' % ''.join(sys.version.splitlines())
+ )
+ sys.exit(1)
+
 
 def get_platform():
  ''' what's the platform? example: Linux is a platform. '''