AttributeError: объект «str» не имеет атрибута «_execute_on_connection»

У меня проблема со следующим кодом:

from pandasql import sqldf
import pandas as pd

df = pd.DataFrame({'column1': [1, 2, 3], 'column2': [4, 5, 6]})

query = "SELECT * FROM df WHERE column1 > 1"

new_dataframe = sqldf(query)

print(new_dataframe)

Когда я отправляю, у меня есть эта ошибка:

Traceback (most recent call last):

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\sqlalchemy\engine\base.py:1410 in execute
    meth = statement._execute_on_connection

AttributeError: 'str' object has no attribute '_execute_on_connection'


The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  File ~\AppData\Local\Programs\Spyder\pkgs\spyder_kernels\py3compat.py:356 in compat_exec
    exec(code, globals, locals)

  File c:\users\yv663dz\downloads\untitled1.py:18
    new_dataframe = sqldf(query)

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\pandasql\sqldf.py:156 in sqldf
    return PandaSQL(db_uri)(query, env)

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\pandasql\sqldf.py:61 in __call__
    result = read_sql(query, conn)

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\pandas\io\sql.py:592 in read_sql
    return pandas_sql.read_query(

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\pandas\io\sql.py:1557 in read_query
    result = self.execute(*args)

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\pandas\io\sql.py:1402 in execute
    return self.connectable.execution_options().execute(*args, **kwargs)

  File ~\AppData\Local\Programs\Spyder\Python\lib\site-packages\sqlalchemy\engine\base.py:1412 in execute
    raise exc.ObjectNotExecutableError(statement) from err

ObjectNotExecutableError: Not an executable object: 'SELECT * FROM df WHERE column1 > 1'

Я установил последние версии pandas, pandasql и sqlalchemy и использую Spyder в качестве IDE. Может ли кто-нибудь помочь мне, пожалуйста?