Python. Pandas+SQL. Метод to_sql выдает странные ошибки

Добрый день.

Подскажите, пожалуйста, что делаю не так:

Выполняю такой код:

import pyodbc
import pandas as pd

driver = 'DRIVER={SQL Server}'
server = 'SERVER=MEGABAX\SQLEXPRESS'
port = 'PORT=1433'
db = 'DATABASE=Python'
user = 'UID=логин'
pw = 'PWD=пароль'
conn_str = ';'.join([driver, server, port, db, user, pw])

conn = pyodbc.connect(conn_str)
cursor = conn.cursor()

nr_customers=100
colnames=["movie%d" %i for i in range(1,33)]
pd.np.random.seed(2015)
generated_customers=pd.np.random.randint(0,2,32*nr_customers).reshape(nr_customers,32)
data=pd.DataFrame(generated_customers, columns=list(colnames))
data.to_sql('cust',conn,index=True,if_exists='replace',index_label='cust_id')
На строке

data.to_sql('cust',conn,index=True,if_exists='replace',index_label='cust_id')

Выдает ошибку:

ProgrammingError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\pandas\io\sql.py in execute(self, *args, **kwargs)
1430 else:
-> 1431 cur.execute(*args)
1432 return cur

ProgrammingError: ('42S02', '[42S02] [Microsoft][ODBC SQL Server Driver][SQL Server]Недопустимое имя объекта "sqlite_master". (208) (SQLExecDirectW); [42S02] [Microsoft][ODBC SQL Server Driver][SQL Server]Не удалось выполнить подготовку инструкций. (8180)')

During handling of the above exception, another exception occurred:

DatabaseError Traceback (most recent call last)
<ipython-input-20-85dbdc50e597> in <module>
19 data=pd.DataFrame(generated_customers, columns=list(colnames))
20 #print(data)
---> 21 data.to_sql('cust',conn,index=True,if_exists='replace',index_label='cust_id')
22

~\Anaconda3\lib\site-packages\pandas\core\generic.py in to_sql(self, name, con, schema, if_exists, index, index_label, chunksize, dtype, method)
2529 sql.to_sql(self, name, con, schema=schema, if_exists=if_exists,
2530 index=index, index_label=index_label, chunksize=chunksize,
-> 2531 dtype=dtype, method=method)
2532
2533 def to_pickle(self, path, compression='infer',

~\Anaconda3\lib\site-packages\pandas\io\sql.py in to_sql(frame, name, con, schema, if_exists, index, index_label, chunksize, dtype, method)
458 pandas_sql.to_sql(frame, name, if_exists=if_exists, index=index,
459 index_label=index_label, schema=schema,
--> 460 chunksize=chunksize, dtype=dtype, method=method)
461
462

~\Anaconda3\lib\site-packages\pandas\io\sql.py in to_sql(self, frame, name, if_exists, index, index_label, schema, chunksize, dtype, method)
1544 if_exists=if_exists, index_label=index_label,
1545 dtype=dtype)
-> 1546 table.create()
1547 table.insert(chunksize, method)
1548

~\Anaconda3\lib\site-packages\pandas\io\sql.py in create(self)
570
571 def create(self):
--> 572 if self.exists():
573 if self.if_exists == 'fail':
574 raise ValueError(

~\Anaconda3\lib\site-packages\pandas\io\sql.py in exists(self)
558
559 def exists(self):
--> 560 return self.pd_sql.has_table(self.name, self.schema)
561
562 def sql_schema(self):

~\Anaconda3\lib\site-packages\pandas\io\sql.py in has_table(self, name, schema)
1556 "WHERE type='table' AND name={wld};").format(wld=wld)
1557
-> 1558 return len(self.execute(query, [name, ]).fetchall()) > 0
1559
1560 def get_table(self, table_name, schema=None):

~\Anaconda3\lib\site-packages\pandas\io\sql.py in execute(self, *args, **kwargs)
1443 "Execution failed on sql '{sql}': {exc}".format(
1444 sql=args[0], exc=exc))
-> 1445 raise_with_traceback(ex)
1446
1447 @staticmethod

~\Anaconda3\lib\site-packages\pandas\compat\__init__.py in raise_with_traceback(exc, traceback)
418 if traceback == Ellipsis:
419 _, _, traceback = sys.exc_info()
--> 420 raise exc.with_traceback(traceback)
421 else:
422 # this version of raise is a syntax error in Python 3

~\Anaconda3\lib\site-packages\pandas\io\sql.py in execute(self, *args, **kwargs)
1429 cur.execute(*args, **kwargs)
1430 else:
-> 1431 cur.execute(*args)
1432 return cur
1433 except Exception as exc:

DatabaseError: Execution failed on sql 'SELECT name FROM sqlite_master WHERE type='table' AND name=?;': ('42S02', '[42S02] [Microsoft][ODBC SQL Server Driver][SQL Server]Недопустимое имя объекта "sqlite_master". (208) (SQLExecDirectW); [42S02] [Microsoft][ODBC SQL Server Driver][SQL Server]Не удалось выполнить подготовку инструкций. (8180)')