启动Django项目时出现Pysqlite2错误

Question

Im trying to start a django project from scratch but i have an error that says "ImportError: No Module Named 'pysqlite2'"

I'm using Python 3.6.0. I will write steps which im following

---

Creating project 

> django-admin startproject testproject

Trying to start an app

> python manage.py startapp demo

Immediately after enters that command, it returns me a long text which includes error's path etc.

Traceback (most recent call last):
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 34, in <module>
    from pysqlite2 import dbapi2 as Database
ModuleNotFoundError: No module named 'pysqlite2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 36, in <module>
    from sqlite3 import dbapi2 as Database
  File "/usr/local/lib/python3.6/sqlite3/__init__.py", line 23, in <module>
    from sqlite3.dbapi2 import *
  File "/usr/local/lib/python3.6/sqlite3/dbapi2.py", line 27, in <module>
    from _sqlite3 import *
ModuleNotFoundError: No module named '_sqlite3'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line
    utility.execute()
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/core/management/__init__.py", line 341, in execute
    django.setup()
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/apps/config.py", line 199, in import_models
    self.models_module = import_module(models_module_name)
  File "/home/berkin/pythonenv/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/contrib/auth/models.py", line 4, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 52, in <module>
    class AbstractBaseUser(models.Model):
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/models/base.py", line 119, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/models/base.py", line 316, in add_to_class
    value.contribute_to_class(cls, name)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/models/options.py", line 214, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/__init__.py", line 33, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/utils.py", line 211, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/utils.py", line 115, in load_backend
    return import_module('%s.base' % backend_name)
  File "/home/berkin/pythonenv/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/home/berkin/pythonenv/local/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 39, in <module>
    raise ImproperlyConfigured("Error loading either pysqlite2 or sqlite3 modules (tried in that order): %s" % exc)
django.core.exceptions.ImproperlyConfigured: Error loading either pysqlite2 or sqlite3 modules (tried in that order): No module named '_sqlite3'

What i tried? - I installed sqlite3-dev with using sudo apt get ... - I tried to install pip install pysqlite2 - I tried to alter source.py which is inside the virtual env folder but it wasnt worked.

But i figured out that when im not using virtual env, i mean without entering source /bin/activate, "python manage.py startapp demo" command has worked. When i activate env, it returns an error which i mentioned above.

Answer 1

according to this answer https://stackoverflow.com/a/23414147/2174832

There is no public version of pysqlite for Python 3.x. For Python 3.x, the sqlite3 module in the standard library is the most up-to date version of pysqlite there is.

run the command pip install sqlite3 within your activated virtualenv and use this module instead of pysqlite2. To activate your virtualenv go to /folderofvirtualenv/bin and run the command source activate