[Python] Django: File "manage.py", line 10, in <module> execute_from_command_line(sys.argv)

I am new to Python and Django. I am trying to install Django on Linux. Python version currently available on the server is Python 2.4.3 I installed Python 3.4.2 following the below steps:

wget https://www.python.org/ftp/python/3.4.2/Python-3.4.2.tgz
tar -xvzf Python-3.4.2.tgz
cd Python-3.4.2
./configure --prefix=/root/python3
make
make install


The python correctly got installed. so when I do /root/python3/bin/python3.4 I get Python version 3.4.2 so i created a soft link -> ln -s /root/python3/bin/python3.4 python3

Now i created a virtualenv through

/root/python3/bin/pyvenv-3.4 venv3.4
source venv3.4/bin/activate


then i installed DJango:

pip install Django==1.9


Django got successfully installed

Created the project myproj:

django-admin startproject myproj


myproj project successfully created:

cd myproj


now when i do python manage.py migrate i get error:

Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 350, in execute_from_command_line
utility.execute()
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 342, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 89, in handle
executor = MigrationExecutor(connection, self.migration_progress_callback)
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/executor.py", line 20, in __init__
self.loader = MigrationLoader(self.connection)
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/loader.py", line 176, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 56, in ensure_schema
with self.connection.schema_editor() as editor:
File "/root/venv3.4/lib/python3.4/site-packages/django/db/backends/sqlite3/schema.py", line 25, in __enter__
self._initial_pragma_fk = c.fetchone()[0]
TypeError: 'NoneType' object is not subscriptable


When i execute command python manage.py runserver i get error:

Performing system checks...

System check identified no issues (0 silenced).
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7fc0df5e7f28>
Traceback (most recent call last):
File "/root/venv3.4/lib/python3.4/site-packages/django/utils/autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
self.check_migrations()
File "/root/venv3.4/lib/python3.4/site-packages/django/core/management/commands/runserver.py", line 163, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/executor.py", line 20, in __init__
self.loader = MigrationLoader(self.connection)
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/loader.py", line 49, in __init__
self.build_graph()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/loader.py", line 176, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/root/venv3.4/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 56, in ensure_schema
with self.connection.schema_editor() as editor:
File "/root/venv3.4/lib/python3.4/site-packages/django/db/backends/sqlite3/schema.py", line 25, in __enter__
self._initial_pragma_fk = c.fetchone()[0]
TypeError: 'NoneType' object is not subscriptable


I tried all the solutions provided in all stackoverflow discussions.

settings.py file

"""
Django settings for myproj project.

Generated by 'django-admin startproject' using Django 1.9.

For more information on this file, see
https://docs.djangoproject.com/en/1.9/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.9/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'qg#8o8)e*or5o#g+pxp3_&9r*=i2b*k59wjis=!*5a1&b6^^_='

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]

MIDDLEWARE_CLASSES = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'myproj.urls'

TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]

WSGI_APPLICATION = 'myproj.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.9/ref/settings/#databases

DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}


# Password validation
# https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]


# Internationalization
# https://docs.djangoproject.com/en/1.9/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.9/howto/static-files/

STATIC_URL = '/static/'


manage.py file

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproj.settings")

from django.core.management import execute_from_command_line

execute_from_command_line(sys.argv)


Django version -> 1.9

I have not added any environment variable like PYTHONPATH or PATH. DO i need to do it. If yes please let me know what to set and how to set.

Requesting you all to please help in resolving this error so that i can start working on Django. Its almost more than 3-4 days i am struggling.

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