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87 lines
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87 lines
3.2 KiB
Plaintext
===============
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Troubleshooting
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===============
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This page contains some advice about errors and problems commonly encountered
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during the development of Django applications.
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.. _troubleshooting-django-admin-py:
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Problems running django-admin.py
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================================
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"command not found: django-admin.py"
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------------------------------------
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:doc:`django-admin.py </ref/django-admin>` should be on your system path if you
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installed Django via ``python setup.py``. If it's not on your path, you can
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find it in ``site-packages/django/bin``, where ``site-packages`` is a directory
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within your Python installation. Consider symlinking to :doc:`django-admin.py
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</ref/django-admin>` from some place on your path, such as
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:file:`/usr/local/bin`.
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Script name may differ in distribution packages
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-----------------------------------------------
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If you installed Django using a Linux distribution's package manager
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(e.g. ``apt-get`` or ``yum``) ``django-admin.py`` may have been renamed to
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``django-admin``; use that instead.
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Mac OS X permissions
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--------------------
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If you're using Mac OS X, you may see the message "permission denied" when
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you try to run ``django-admin.py``. This is because, on Unix-based systems like
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OS X, a file must be marked as "executable" before it can be run as a program.
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To do this, open Terminal.app and navigate (using the ``cd`` command) to the
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directory where :doc:`django-admin.py </ref/django-admin>` is installed, then
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run the command ``sudo chmod +x django-admin.py``.
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Running virtualenv on Windows
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-----------------------------
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If you used virtualenv_ to :ref:`install Django <installing-official-release>`
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on Windows, you may get an ``ImportError`` when you try to run
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``django-admin.py``. This is because Windows does not run the
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Python interpreter from your virtual environment unless you invoke it
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directly. Instead, prefix all commands that use .py files with ``python`` and
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use the full path to the file, like so:
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``python C:\pythonXY\Scripts\django-admin.py``.
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.. _virtualenv: http://www.virtualenv.org/
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Miscellaneous
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=============
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I'm getting a ``UnicodeDecodeError``. What am I doing wrong?
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------------------------------------------------------------
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This class of errors happen when a bytestring containing non-ASCII sequences is
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transformed into a Unicode string and the specified encoding is incorrect. The
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output generally looks like this::
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UnicodeDecodeError: 'ascii' codec can't decode byte 0x?? in position ?:
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ordinal not in range(128)
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The resolution mostly depends on the context, however here are two common
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pitfalls producing this error:
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* Your system locale may be a default ASCII locale, like the "C" locale on
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UNIX-like systems (can be checked by the ``locale`` command). If it's the
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case, please refer to your system documentation to learn how you can change
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this to a UTF-8 locale.
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* You created raw bytestrings, which is easy to do on Python 2::
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my_string = 'café'
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Either use the ``u''`` prefix or even better, add the
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``from __future__ import unicode_literals`` line at the top of your file
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so that your code will be compatible with Python 3.2 which doesn't support
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the ``u''`` prefix.
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Related resources:
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* :doc:`Unicode in Django </ref/unicode>`
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* https://wiki.python.org/moin/UnicodeDecodeError
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