old_contents: 
  import peewee
  import logging
  import config
  
  
  # Database initialization
  if config.db_type == "sqlite":
      database = peewee.SqliteDatabase("trader_db.db", threadlocals=True)
  elif config.db_type == "mysql":
      database = peewee.MySQLDatabase("trader_db", host="local", user=config.db_username,
                                      passwd=config.db_password)
  else:
      raise Exception("db_type must be sqlite or mysql")
  
  
  # Models
  class BaseModel(peewee.Model):
      class Meta:
          database = database
  
  
  class Order(BaseModel):
      order_id = peewee.IntegerField()
      market = peewee.CharField(max_length=32)
      time_placed = peewee.DateTimeField()
      order_type = peewee.CharField(max_length=4)
      price = peewee.DecimalField(decimal_places=8)
      amount = peewee.DecimalField(decimal_places=8)
      has_executed = peewee.BooleanField(default=False)
  
      class Meta:
          order_by = ('-time_placed',)
  
  if config.use_db is True:
      database.connect()
      database.close()
      logging.info("Logging to %s database", config.db_type)
      # Create table if it doesn't exist
      Order.create_table(fail_silently=True)
  
  
  def place_order(order_id, market, time_placed, order_type, order_price, order_amount):
      if config.use_db is False:
          pass
      database.connect()
      Order.create(order_id=order_id, market=market, time_placed=time_placed, order_type=order_type,
                   price=order_price, amount=order_amount)
      database.close()
  
  
new_contents: 
  import peewee
  import logging
  import config
  
  
  # Database initialization
  if config.db_type == "sqlite":
      database = peewee.SqliteDatabase("trader_db.db", threadlocals=True)
  elif config.db_type == "mysql":
      database = peewee.MySQLDatabase("trader_db", host="local", user=config.db_username,
                                      passwd=config.db_password)
  else:
      raise Exception("db_type must be sqlite or mysql")
  
  
  # Models
  class BaseModel(peewee.Model):
      class Meta:
          database = database
  
  
  class Order(BaseModel):
      order_id = peewee.CharField(max_length=64)
      market = peewee.CharField(max_length=32)
      time_placed = peewee.DateTimeField()
      order_type = peewee.CharField(max_length=4)
      price = peewee.DecimalField(decimal_places=8)
      amount = peewee.DecimalField(decimal_places=8)
      has_executed = peewee.BooleanField(default=False)
  
      class Meta:
          order_by = ('-time_placed',)
  
  if config.use_db is True:
      database.connect()
      database.close()
      logging.info("Logging to %s database", config.db_type)
      # Create table if it doesn't exist
      Order.create_table(fail_silently=True)
  
  
  def place_order(order_id, market, time_placed, order_type, order_price, order_amount):
      if config.use_db is False:
          pass
      database.connect()
      Order.create(order_id=order_id, market=market, time_placed=time_placed, order_type=order_type,
                   price=order_price, amount=order_amount)
      database.close()
  
  
subject: Change order_id to charfield