现在再自学Python3.0爬虫，源代码如下：

import pymysql

db = pymysql.connect(host='localhost',user='root',password='123456',port=3306)

cursor = db.cursor()

cursor.execute('SELECT VERSION()')

data = cursor.fetchone()

print('Database version:',data)

cursor.execute("CREATE DATABASE spiders DEFAULT CHARACTER SET utf8")

db.close()

运行结果如下：

Database version: ('8.0.13',)

Traceback (most recent call last):

File "C:\Users\yuxiaofeng1229\Desktop\lianxi.py", line 12, in 

cursor.execute("CREATE DATABASE spiders DEFAULT CHARACTER SET utf8")

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\cursors.py", line 170, in execute

result = self._query(query)

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\cursors.py", line 328, in _query

conn.query(q)

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 516, in query

self._affected_rows = self._read_query_result(unbuffered=unbuffered)

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 727, in _read_query_result

result.read()

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 1066, in read

first_packet = self.connection._read_packet()

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\connections.py", line 683, in _read_packet

packet.check_error()

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\protocol.py", line 220, in check_error

err.raise_mysql_exception(self._data)

File "C:\Users\yuxiaofeng1229\AppData\Local\Programs\Python\Python36\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception

raise errorclass(errno, errval)

pymysql.err.ProgrammingError: (1007, "Can't create database 'spiders'; database exists")

下面这些问题是什么问题呢？应该怎么修改哈？