Python-sqlite3.sqlite3.OperationalError:靠近“%”：语法错误？

首先，在一切发生之前，我意识到这个问题已经被事先问过了。我已经寻找了几个小时试图解决我的问题，但我还没有能够正确地实现一个解决方案，我仍然遇到了错误

我正在尝试插入到一个表中。我希望表名是动态的，但我相信这也是不允许的？使用变量字符串。从我所做的研究来看，这似乎是不允许的/好的做法，因为它将代码留给SQL注入

我已尝试将%s替换为？但它仍然返回相同的错误？而不是%

这是我正在使用的代码。大部分都归功于James Mills，我只是尝试使用他从CSV中为sqlite3 INSERT语句生成的语句，如果这有意义的话

"""csv2sql

Tool to convert CSV data files into SQL statements that
can be used to populate SQL tables. Each line of text in
the file is read, parsed and converted to SQL and output
to stdout (which can be piped).

A table to populate is given by the -t/--table option or
by the basename of the input file (if not standard input).

Fields are either given by the -f/--fields option (comma
separated) or determinted from the first row of data.
"""

__version__ = "0.4"
__author__ = "James Mills"
__date__ = "3rd February 2011"

import os
import csv
import sys
import optparse
import sqlite3

USAGE = "%prog [options] <file>"
VERSION = "%prog v" + __version__

def parse_options():
    parser = optparse.OptionParser(usage=USAGE, version=VERSION)

    parser.add_option("-t", "--table",
            action="store", type="string",
            default=None, dest="table",
            help="Specify table name (defaults to filename)")

    parser.add_option("-f", "--fields",
            action="store", type="string",
            default=None, dest="fields",
            help="Specify a list of fields (comma-separated)")

    parser.add_option("-s", "--skip",
            action="append", type="int",
            default=[], dest="skip",
            help="Specify records to skip (multiple allowed)")

    opts, args = parser.parse_args()

    if len(args) < 1:
        parser.print_help()
        raise SystemExit, 1

    return opts, args

def generate_rows(f):
    sniffer = csv.Sniffer()
    dialect = sniffer.sniff(f.readline())
    f.seek(0)

    reader = csv.reader(f, dialect)
    for line in reader:
        yield line

def main():
    opts, args = parse_options()

    filename = args[0]

    if filename == "-":
        if opts.table is None:
            print "ERROR: No table specified and stdin used."
            raise SystemExit, 1
        fd = sys.stdin
        table = opts.table
    else:
        fd = open(filename, "rU")
        if opts.table is None:
            table = os.path.splitext(filename)[0]
        else:
            table = opts.table

    rows = generate_rows(fd)

    if opts.fields:
        fields = ", ".join([x.strip() for x in opts.fields.split(",")])
    else:
        fields = ", ".join(rows.next())

    for i, row in enumerate(rows):
        if i in opts.skip:
            continue

        values = ", ".join(["\"%s\"" % x for x in row])
        print "INSERT INTO %s (%s) VALUES (%s);" % (table, fields, values)

        con = sqlite3.connect("school")
        cur = con.cursor()

        cur.executemany("INSERT INTO %s (%s) VALUES (%s);", (table, fields, values))
        con.commit()
        con.close()

if __name__ == "__main__":
    main()

以下是一个输出示例：

> INSERT INTO data (School Name, Summer 15, Summer 16, Summer 17) VALUES ("School One", "126", "235", "453");
Traceback (most recent call last):
  File "sniffer.py", line 103, in <module>
    main()
  File "sniffer.py", line 98, in main
    cur.executemany("INSERT INTO %s (%s) VALUES (%s);", (table, fields, values))
sqlite3.OperationalError: near "%": syntax error

嗅探器是获取列的名称和它们的值的工具，我尝试将它们放入SQL语句中

我试过很多方法，但我还没能想出一个解决办法

请不要打我！我对这一切都不熟悉，只需要一点帮助

---

感谢您的帮助

记住输入的可能性并确保对输入进行清理，您可以这样准备查询：

if opts.fields:
    fields = ", ".join([x.strip() for x in opts.fields.split(",")])
else:
    fields = ", ".join(rows.next())

qry = "INSERT INTO %s (%s) VALUES (%s);" % (table,
                                            fields,
                                            ",".join("?"*len(rows)),)

请注意，对于SQLite中的参数替换，您需要使用？s

您是否尝试过按{var}.格式？可能重复的

cur.executemany(qry, (rows,))