added use command. added some functions to bashrc.

pythonbrew/commands/installed.py

@@ -1,9 +1,9 @@
 import os
-import sys
 from subprocess import Popen, PIPE
 from pythonbrew.basecommand import Command
 from pythonbrew.define import PATH_PYTHONS
 from pythonbrew.log import logger
+from pythonbrew.util import get_current_python_path
 
 class InstalledCommand(Command):
     name = "installed"
@@ -11,20 +11,14 @@ class InstalledCommand(Command):
     summary = "List the installed versions of python"
     
     def run_command(self, options, args):
-        cur = None
-        if not os.path.islink("%s/current" % PATH_PYTHONS):
-            p = Popen('command -v python', stdout=PIPE, shell=True)
-            p.wait()
-            if p.returncode == 0:
-                logger.info("%s (*)" % p.stdout.read().strip())
-        elif os.path.islink("%s/current" % PATH_PYTHONS):
-            cur = os.path.basename(os.path.realpath("%s/current" % PATH_PYTHONS))
-        for d in sorted(os.listdir("%s/" % PATH_PYTHONS)):
-            if d == "current":
-                continue
-            if cur == d:
-                logger.info("%s (*)" % cur)
+        cur = get_current_python_path()
+        for d in sorted(os.listdir('%s/' % PATH_PYTHONS)):
+            if cur == os.path.join(PATH_PYTHONS, d, 'bin','python'):
+                logger.info('%s (*)' % d)
+                cur = None
             else:
-                logger.info("%s" % (d))
-
+                logger.info(d)
+        if cur:
+            logger.info('%s (*)' % cur)
+        
 InstalledCommand()