您仅在连接失败时设置“ cursor”，因为您将这些行放在了“ except：”块中。这两行应该在try：块中...
Error: Traceback (most recent call last): File "/usr/local/lib/python3.8/site-packages/IPython/terminal/ptutils.py", line 113, in get_completions yield from self._get_completions(body, offset, cursor_position, self.ipy_completer) File "/usr/local/lib/python3.8/site-packages/IPython/termina...
cur = conn.cursor()classDatabase:def__init__(self, db): self.conn = sqlite3.connect(db) self.cur = self.conn.cursor() self.cur.execute("CREATE TABLE IF NOT EXISTS routers (id INTEGER PRIMARY KEY, hostname text, brand text, ram integer, flash integer)") self.conn....
"CREATE TABLE IF NOT EXISTS routers (id INTEGER PRIMARY KEY, hostname text, brand text, ram ...
database="sample_db") cursor = connection.cursor() xw.Book(input_template).set_mock_caller() template = xw.Book.caller() template_path = template.fullname report_path = os.path.join(os.path.dirname(template.fullname), output_file) app = template.app (not all shown) # OSERROR: -50...
=1: raise Exception("账号不存在" %acctid) finally: cursor.close() def has_enough_money(self, acctid, money): cursor =self.conn.cursor() try: sql = "select * from account where acctid=%s and money>%s"%(acctid,money) cursor.execute(sql) print "has_enough_money:" +sql rs = ...
['MYSQL_CURSORCLASS'] ='DictCursor'mysql = MySQL(app)if__name__ =='__main__': app.run(debug=True)@app.route('/employee', methods=['GET','POST'])defemployee():ifrequest.method =='GET': cur = mysql.connection.cursor() cur.execute('''SELECT * FROM employee''') results = cur...
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You do not create the variables in the global scope. And anyway, it is generally a bad idea to use global this way. I suggest changing your function to: def fingerCursor(device): cap = cv2.VideoCapture(device) cap_height = cap.get(cv2.cap_PROP_FRAME_HEIGHT) cap_width = cap.get(cv2...