added use command. added some functions to bashrc.

pythonbrew/commands/uninstall.py

@@ -2,7 +2,7 @@ import os
 import sys
 from pythonbrew.basecommand import Command
 from pythonbrew.define import PATH_PYTHONS
-from pythonbrew.util import off, rm_r, Package
+from pythonbrew.util import off, rm_r, Package, get_current_python_path
 from pythonbrew.log import logger
 
 class UninstallCommand(Command):
@@ -14,14 +14,12 @@ class UninstallCommand(Command):
         if args:
             pkg = Package(args[0])
             pkgname = pkg.name
-            pkgpath = "%s/%s" % (PATH_PYTHONS, pkgname)
+            pkgpath = os.path.join(PATH_PYTHONS, pkgname)
             if not os.path.isdir(pkgpath):
                 logger.info("`%s` is not installed." % pkgname)
                 sys.exit(1)
-            if os.path.islink("%s/current" % PATH_PYTHONS):
-                curpath = os.path.realpath("%s/current" % PATH_PYTHONS)
-                if pkgpath == curpath:
-                    off()
+            if get_current_python_path() == os.path.join(pkgpath,'bin','python'):
+                off()
             rm_r(pkgpath)
         else:
             self.parser.print_help()