Command to launch interpreter with spack in sys.path

lib/spack/spack/cmd/python.py

+import code
+import os
+import platform
+from contextlib import closing
+
+import spack
+
+description = "Launch an interpreter as spack would launch a command"
+
+def python(parser, args):
+    console = code.InteractiveConsole()
+
+    if "PYTHONSTARTUP" in os.environ:
+        startup_file = os.environ["PYTHONSTARTUP"]
+        if os.path.isfile(startup_file):
+            with closing(open(startup_file)) as startup:
+                console.runsource(startup.read(), startup_file, 'exec')
+
+    console.interact("Spack version %s\nPython %s, %s %s"""
+                     % (spack.spack_version, platform.python_version(),
+                        platform.system(), platform.machine()))