Mysql 为什么不是'；这不是一个例外吗

我有以下代码：

    query = "SELECT * FROM `actions` WHERE clientId = '{}'".format(id)
    cursor.execute(query)
    r = cursor.fetchone()

    try:
        query = (
                 "INSERT INTO `actions`(`name`,`price`,`clientId`) VALUES"
                 " ('{}',{}'{}')".format(r['name'],r['price']+10, id)
                 )

        cursor.execute(query)
        self.dbconn.commit()

    except:
        print("something wrong")

我得到了这个错误：

Traceback (most recent call last):
  File "/opt/trybinance01/collector.py", line 179, in function1
    cursor.execute(query)
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/cursors.py", line 165, in execute
    result = self._query(query)
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/cursors.py", line 321, in _query
    conn.query(q)
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/connections.py", line 860, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/connections.py", line 1061, in _read_query_result
    result.read()
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/connections.py", line 1349, in read
    first_packet = self.connection._read_packet()
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/connections.py", line 1008, in _read_packet
    recv_data = self._read_bytes(bytes_to_read)
  File "/opt/trybinance01/venv_binance/lib/python3.6/site-packages/pymysql/connections.py", line 1025, in _read_bytes
    data = self._rfile.read(num_bytes)
AttributeError: 'NoneType' object has no attribute 'read'

---

为什么这没有被异常捕获并打印“出错”

您的代码中有两个

游标。execute（）

s，并且只有一个受

try

/

块的保护，除了
块

我怀疑如果您将回溯（
179
）中的行与源代码中的行179进行比较，您会发现它是
游标。execute（）
位于
try
/
块之外，除了
块。
它可能发生在
游标中。execute
位于
try
块之外。为您的查询指定不同的名称以进行检查。此外，这很容易被注入：您是否确保查询的内容是正确的？