git_remote_helpers: force rebuild if python version changes

diff --git a/git-p4.py b/git-p4.py
index 9712082a4facfec19cb2b687ce3d877c22938f6f..69f1452cf80066a002fe58bb1eeebda7fe63ba8b 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -8,7 +8,13 @@
 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
 #
 
-import optparse, sys, os, marshal, subprocess, shelve
+import sys
+if sys.hexversion < 0x02040000:
+    # The limiter is the subprocess module
+    sys.stderr.write("git-p4: requires Python 2.4 or later.\n")
+    sys.exit(1)
+
+import optparse, os, marshal, subprocess, shelve
 import tempfile, getopt, os.path, time, platform
 import re, shutil
 
@@ -3188,7 +3194,6 @@ def main():
         printUsage(commands.keys())
         sys.exit(2)
 
-    cmd = ""
     cmdName = sys.argv[1]
     try:
         klass = commands[cmdName]