On Mon, Nov 16, 2009 at 4:50 AM, Kuhl <chen_zhi...@yahoo.com> wrote: <snip> > found in my system, so I have to use python instead. However, "import > subprocess" still failed, see below. > > # which python > /usr/bin/python > # which ipython > ipython: Command not found. > # python > Python 2.2.3 (#1, Feb 2 2005, 12:22:48) > [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-49)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. >>>> import subprocess > Traceback (most recent call last): > File "<stdin>", line 1, in ? > ImportError: No module named subprocess >>>>
The `subprocess` modules was added in Python 2.4. You're using Python 2.2.3; you need to update. > should start to search for it. Then I tried to key in a function > file python_func_00.py by myself. > > def pyfunc(): > print "Hello function" > > > # python > Python 2.2.3 (#1, Feb 2 2005, 12:22:48) > [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-49)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. >>>> import python_func_00 >>>> pyfunc() > Traceback (most recent call last): > File "<stdin>", line 1, in ? > NameError: name 'pyfunc' is not defined <snip> > What's the mistake that I am making? How to solve it? The `import foo` statement only adds the name of the module itself to your namespace, so you need to refer to pyfunc by way of the module name. To wit: import python_func_00 python_func_00.pyfunc() Alternatively, you can specify a set of names to import from the module namespace into your own using the `from foo import bar` syntax: from python_func_00 import pyfunc pyfunc() Regarding ipython, it's a third-party package that is not part of Python itself and must be installed separately. Exactly how you do so will obviously depend on which distro you're using. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
