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使用Python 2.7.9,我試圖分析出Python的MySQL和上下文管理器:__exit__屬性錯誤
的代碼是
class MySQLCursor:
def __init__(self, commit=False):
self.commit = commit
def __enter__(self):
self.conn = MySQLdb.connect(host=_MYMYSQLHOST,
user=_MYMYSQLUSER,
passwd=_MYMYSQLPASSWD,
db=_MYMYSQLDB)
self.cursor = self.conn.cursor()
return self.cursor
def __exit__(self, exc_type, exc_val, exc_tb):
if self.commit:
self.conn.commit()
self.cursor.close()
self.conn.close()
return
使用它的開放和MySQL連接的關閉和遊標作爲
with MySQLCursor as cursor:
cursor.execute("SELECT VERSION()")
row = cursor.fetchone()
print "server version:", row[0]
我得到錯誤信息
AttributeError: __exit__
這是一個MySQL問題或上下文管理器的問題?
嘗試'與MySQLCursor()作爲遊標' –