python 連接 mysql 數據庫出現 keyerror： 255，字符集相關錯誤
Traceback (most recent call last):
File "<ipython-input-13-850297a5d287>", line 1, in <module>
mydata = con_mysql(sql)
File "<ipython-input-12-4a07bff92d12>", line 3, in con_mysql
,port = port,db = dbname,charset="utf8")
File "D:\Programfiles\Anaconda3\lib\site-packages\pymysql\__init__.py", line 90, in Connect
return Connection(*args, **kwargs)
File "D:\Programfiles\Anaconda3\lib\site-packages\pymysql\connections.py", line 706, in __init__
self.connect()
File "D:\Programfiles\Anaconda3\lib\site-packages\pymysql\connections.py", line 931, in connect
self._get_server_information()
File "D:\Programfiles\Anaconda3\lib\site-packages\pymysql\connections.py", line 1269, in _get_server_information
self.server_charset = charset_by_id(lang).name
File "D:\Programfiles\Anaconda3\lib\site-packages\pymysql\charset.py", line 38, in by_id
return self._by_id[id]
KeyError: 255
參考文章 https://blog.csdn.net/Evan_Hsu/article/details/80182679 打開cmd，更新 PyMySQL包，不再報錯：
> pip install --upgrade PyMySQL
Collecting PyMySQL
Downloading https://files.pythonhosted.org/packages/ed/39/15045ae46f2a123019aa968dfcba0396c161c20f855f11dea6796bcaae95/PyMySQL-0.9.3-py2.py3-none-any.whl (47kB)
100% |████████████████████████████████| 51kB 110kB/s
Installing collected packages: PyMySQL
Found existing installation: PyMySQL 0.7.11
Uninstalling PyMySQL-0.7.11:
Successfully uninstalled PyMySQL-0.7.11
Successfully installed PyMySQL-0.9.3
