old_contents: from django.db.backends.signals import connection_created
  
  __version__ = '2.10.0'
  
  
  import random
  
  def get_random_sequence(n):
      return "".join(["agct"[random.randint(0, 3)] for i in range(n)])
  
  
  def import_gff(name, fn):
      """
      Creates a new genome using the specified GFF file.
  
      name: Name of genome
      fn: path to GFF file
      """
  
      from edge.models import Genome
      if Genome.objects.filter(name=name).count() > 0:
          raise Exception('There is already a genome named "%s"' % (name,))
      g = Genome.import_gff(name, fn)
      return g
  
  
  def _setup_sqlite3(sender, connection, **kwargs):
      """
      Setup SQLite to allow FKs and use in-memory journals
      """
  
      if connection.vendor == 'sqlite':
          cursor = connection.cursor()
          cursor.execute('PRAGMA foreign_keys = ON;')
          cursor.execute('PRAGMA journal_mode = MEMORY;')
  
  
  connection_created.connect(_setup_sqlite3)
  
new_contents: from django.db.backends.signals import connection_created
  
  __version__ = '2.10.0'
  
  
  import random
  
  
  def get_random_sequence(n):
      return "".join(["agct"[random.randint(0, 3)] for i in range(n)])
  
  
  def import_gff(name, fn):
      """
      Creates a new genome using the specified GFF file.
  
      name: Name of genome
      fn: path to GFF file
      """
  
      from edge.models import Genome
      if Genome.objects.filter(name=name).count() > 0:
          raise Exception('There is already a genome named "%s"' % (name,))
      g = Genome.import_gff(name, fn)
      return g
  
  
  def _setup_sqlite3(sender, connection, **kwargs):
      """
      Setup SQLite to allow FKs and use in-memory journals
      """
  
      if connection.vendor == 'sqlite':
          cursor = connection.cursor()
          cursor.execute('PRAGMA foreign_keys = ON;')
          cursor.execute('PRAGMA journal_mode = MEMORY;')
  
  
  connection_created.connect(_setup_sqlite3)
  
subject: fix flake8 error