old_contents: # Module to initialize sqlalchemy with flask
  import os
  import sys
  from string import Template
  from typing import Tuple
  from urllib.parse import urlparse
  import importlib
  
  import MySQLdb
  
  from sqlalchemy import create_engine
  from sqlalchemy.orm import scoped_session, sessionmaker
  from sqlalchemy.ext.declarative import declarative_base
  
  def read_from_pyfile(pyfile, setting):
      orig_sys_path = sys.path[:]
      sys.path.insert(0, os.path.dirname(pyfile))
      module = importlib.import_module(os.path.basename(pyfile).strip(".py"))
      sys.path = orig_sys_path[:]
      return module.__dict__.get(setting)
  
  def sql_uri():
      """Read the SQL_URI from the environment or settings file."""
      return os.environ.get(
          "SQL_URI", read_from_pyfile(
              os.environ.get(
                  "GN2_SETTINGS", os.path.abspath("../etc/default_settings.py")),
              "SQL_URI"))
  
  def parse_db_url(sql_uri: str) -> Tuple:
      """
      Parse SQL_URI env variable from an sql URI
      e.g. 'mysql://user:pass@host_name/db_name'
      """
      parsed_db = urlparse(sql_uri)
      return (parsed_db.hostname, parsed_db.username,
              parsed_db.password, parsed_db.path[1:])
  
  def database_connection():
      """Returns a database connection"""
      host, user, passwd, db_name = parse_db_url(sql_uri())
      return MySQLdb.Connect(db=db_name, user=user, passwd=passwd, host=host)
  
new_contents: # Module to initialize sqlalchemy with flask
  import os
  import sys
  from string import Template
  from typing import Tuple
  from urllib.parse import urlparse
  import importlib
  
  import MySQLdb
  
  from sqlalchemy import create_engine
  from sqlalchemy.orm import scoped_session, sessionmaker
  from sqlalchemy.ext.declarative import declarative_base
  
  def read_from_pyfile(pyfile, setting):
      orig_sys_path = sys.path[:]
      sys.path.insert(0, os.path.dirname(pyfile))
      module = importlib.import_module(os.path.basename(pyfile).strip(".py"))
      sys.path = orig_sys_path[:]
      return module.__dict__.get(setting)
  
  def sql_uri():
      """Read the SQL_URI from the environment or settings file."""
      return os.environ.get(
          "SQL_URI", read_from_pyfile(
              os.environ.get(
                  "GN2_SETTINGS", os.path.abspath("../etc/default_settings.py")),
              "SQL_URI"))
  
  def parse_db_url(sql_uri: str) -> Tuple:
      """
      Parse SQL_URI env variable from an sql URI
      e.g. 'mysql://user:pass@host_name/db_name'
      """
      parsed_db = urlparse(sql_uri)
      return (parsed_db.hostname, parsed_db.username,
              parsed_db.password, parsed_db.path[1:])
  
  def database_connection():
      """Returns a database connection"""
      host, user, passwd, db_name = parse_db_url(sql_uri())
      return MySQLdb.connect(db=db_name, user=user, passwd=passwd, host=host)
  
subject: Use `MySQLdb.connect` rather than `MySQLdb.Connect`