Python mysql无法处理参数

Question

I've looked at previous questions but the solutions suggested never worked. What I have found is that if I create a new column in the table and save 2 variables it works as intended. I have a working insert into a different table earlier in the code so I know the method works. The only difference being this query has a single variable.

Here is the code:

cursor.execute("INSERT INTO docs (filingNum) VALUES (%s)", (docNum))
database.commit()

I get the following output. The string of numbers being what I want to insert into the table.

docNum is: 0000928052-21-000002
Traceback (most recent call last):
  File "/home/andy/Documents/testing/concat.py", line 76, in <module>
    sec_rss()
  File "/home/andy/Documents/testing/concat.py", line 68, in sec_rss
    cursor.execute("INSERT INTO docs (filingNum) VALUES (%s", (docNum))
  File "/home/andy/.local/lib/python3.9/site-packages/mysql/connector/cursor_cext.py", line 257, in execute
    prepared = self._cnx.prepare_for_mysql(params)
  File "/home/andy/.local/lib/python3.9/site-packages/mysql/connector/connection_cext.py", line 651, in prepare_for_mysql
    raise ValueError("Could not process parameters")
ValueError: Could not process parameters

Answer 1

Does the statement:

cursor.execute("INSERT INTO docs (filingNum) VALUES (%s", (docNum))

require a closing paren?

cursor.execute("INSERT INTO docs (filingNum) VALUES (%s)", (docNum))

Typically I use a statement something like:

cursor.execute('''INSERT INTO [docs] values (?)''', docNum)