Use a canonical Python3 version

bin/bbs_build.py

@@ -1,4 +1,7 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 from pylibinit import addlibpath
 addlibpath.add_lib_path()

bin/bbs_build_env.py

@@ -1,4 +1,7 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 from pylibinit import addlibpath
 

bin/bbs_make_vscode.py

@@ -1,10 +1,12 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 import os
 import subprocess
 import sys
 
-
 def quotedCMakeArgValue(value):
     if value in ["0", "OFF", "NO", "FALSE", "N"]:
         return "false"

bin/bde_build_env.py

@@ -1,4 +1,7 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 from pylibinit import addlibpath
 

bin/bde_make_vscode.py

@@ -1,4 +1,7 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 import os
 import subprocess

bin/bde_runtest.py

@@ -1,4 +1,7 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
+
+from checkversion import checkversion
+checkversion()
 
 from pylibinit import addlibpath
 

bin/checkversion.py

@@ -0,0 +1,5 @@
+import sys
+
+def checkversion():
+    if sys.version_info[0] == 3 and sys.version_info[1] < 8:
+        raise Exception("Must be using at least Python 3.8")

bin/cmake_build.py

@@ -1,5 +1,7 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
 
+from checkversion import checkversion
+checkversion()
 
 import argparse
 import collections