第十章tmitter项目问题：
Unhandled exception in thread started by <function wrapper at 0x105572500>
Traceback (most recent call last):
File “/Users/lumeiling/shell/pyproject/tmitter/venv/lib/python2.7/site-packages/django/utils/autoreload.py”, line 228, in wrapper
fn(args, **kwargs)
File “/Users/lumeiling/shell/py_project/tmitter/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py”, line 116, in inner_run
autoreload.raise_last_exception()
File “/Users/lumeiling/shell/py_project/tmitter/venv/lib/python2.7/site-packages/django/utils/autoreload.py”, line 251, in raise_last_exception
six.reraise(exception)
File “/Users/lumeiling/shell/pyproject/tmitter/venv/lib/python2.7/site-packages/django/utils/autoreload.py”, line 228, in wrapper
fn(args, *kwargs)
File “/Users/lumeiling/shell/pyproject/tmitter/venv/lib/python2.7/site-packages/django/init.py”, line 27, in setup
apps.populate(settings.INSTALLED_APPS)
File “/Users/lumeiling/shell/py_project/tmitter/venv/lib/python2.7/site-packages/django/apps/registry.py”, line 85, in populate
app_config = AppConfig.create(entry)
File “/Users/lumeiling/shell/py_project/tmitter/venv/lib/python2.7/site-packages/django/apps/config.py”, line 120, in create
mod = import_module(mod_path)
File “/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init.py”, line 37, in import_module
__import(name)
ImportError: No module named tmitter

望请教！