Cannot start / debug Django manage.py from eclipse

Question

Whenever I try to debug Django manage.py from Eclipse, I get:

 pydev debugger: warning: psyco not available for speedups (the debugger will still work correctly, but a bit slower) pydev debugger: starting Traceback (most recent call last): File "/proj/virtualenvs/testing/infocards/manage.py", line 15, in <module> execute_manager(settings) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/commands/runserver.py", line 67, in handle self.run(*args, **options) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/core/management/commands/runserver.py", line 76, in run autoreload.main(self.inner_run, args, options) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/utils/autoreload.py", line 131, in main reloader(main_func, args, kwargs) File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/utils/autoreload.py", line 104, in python_reloader reloader_thread() File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/utils/autoreload.py", line 83, in reloader_thread ensure_echo_on() File "/proj/virtualenvs/testing/lib/python2.6/site-packages/django/utils/autoreload.py", line 77, in ensure_echo_on attr_list = termios.tcgetattr(fd) termios.error: (22, 'Invalid argument') Validating models... 

Running python manage.py runserver from the command line is fine.

As a result of the search, I found that the termios.error: (22, 'Invalid argument') error is that python is trying to read from stdin but cannot from inside the Eclipse environment.

[Edit]: I forgot to mention that I am running PyDev and the latest version of Django version 1.3.

[Edit]: @Blake, @izhak. I am Eclipse I defined Python included in my virtualenv (/ proj / virtualenvs / testing, as you can see from the output). From the command line, I use the same version of Python that I activated virtualenv.

Answer 1

It seems that the lack of --noreload is causing this effect. Weird

EDIT: At first, I thought this was the working directory of the project.

Answer 2

Spend 3 hours figuring out this problem. The main culprit is the django 1.3 autoload.py file. Basically, Eclipse stdin is not a device type. The hack for this problem is to modify / your -path-to-django / util / autoreload.py like this:

 index e5a421e..1a4a1a1 100644 --- a/autoreload_bak.py +++ b/usr/local/lib/python2.6/dist-packages/django/utils/autoreload.py @@ -73,11 +73,12 @@ def code_changed(): def ensure_echo_on(): if termios: - fd = sys.stdin.fileno() - attr_list = termios.tcgetattr(fd) - if not attr_list[3] & termios.ECHO: - attr_list[3] |= termios.ECHO - termios.tcsetattr(fd, termios.TCSANOW, attr_list) + if sys.stdin.isatty(): + fd = sys.stdin.fileno() + attr_list = termios.tcgetattr(fd) + if not attr_list[3] & termios.ECHO: + attr_list[3] |= termios.ECHO + termios.tcsetattr(fd, termios.TCSANOW, attr_list) def reloader_thread(): ensure_echo_on() 

This should allow you to run runerver in Eclipse even without the -noreload option.

Note. You still need to apply this patch to get rid of the problem with the child / parent process, see here: How to enable Eclipse debugging features in a web application?

Answer 3

I had the same error when I tried to just start the django program from Eclipse. If I right-click on the project and then select Django → Custom Command and "runningerver", it will fail. I finally found out that by clicking the Run button on the Eclipse toolbar, it will work. Even there, however, I found that this was not always the right thing. I am running the latest version of PyDev 2.0. Like you, run it every time from the command line outside of eclipse.

Answer 4

Have you tried installing the PyDev plugin for Eclipse? It really makes it easier for Eclipse users to develop Python applications, and especially Django applications. Just create a new Django project and you will get a well-tuned environment and manage.py available for work from the project context menu.

Answer 5

Do you have multiple versions of Python on your system? If the version opened from the terminal is different from the version used by the PyDev interpreter, this may cause problems / differences in the working environment.

Answer 6

You can check Eclipse> Windows> Preferences> Pydev> Python for use in python versionu u. Give the exact version of python and use there.