类型错误：没有足够的论据，格式字符串中使用％s和Python字典

我印我的“有效载荷”，我想保存到MySQL数据库的输出时：类型错误：没有足够的论据，格式字符串中使用％s和Python字典

('B01MTOV8IP', '40462', '23.95', 'n/a', 'Usually ships in 24 hours', 
'https://www.amazon.com/reviews/iframe?akid=AKIAIDCPAFSAQICDTFNQ&alinkCode=xm2&asin=B01MTOV8IP&atag=reakenture-20&exp=2017-08-25T17%3A27%3A37Z&v=2&sig=3zbBXVo4cQAJueFeVeo%252F%252FejvaUOmvuwAtfB4EfMyDiU%253D', 'CHG-GSTWL')

似乎有在我将它传递给连接之前，对其进行格式设置时出现问题。

try: 
    selling_price = product.price_and_currency 
    selling_price_v = selling_price[0]#type 
    print selling_price_v 
except Exception as e: 
    selling_price = "n/a" 

conn = MySQLdb.connect(host="clabadmin.cfcudy1fdz8o.us-east-1.rds.amazonaws.com", user="", passwd="", db="") 
payload =[ 
asin, 
bsr, 
str(selling_price_v), 
str(listing_price_v), 
# availability_type, 
availability, 
reviews, 
sku] 
print payload 
# conn = sqlite3.connect('skubsr.db') 
c = conn.cursor() 
c.execute("""UPDATE webservice_bsr 
SET 
AISN = %s, 
Best_Sellers_Rank = %s, 
selling_price = %s, 
price = %s, 
# availability_type = %s, 
availability = %s, 
reviews = %s 
WHERE ItemSKU = %s""", payload) 
conn.commit()

我收到以下错误：

Traceback (most recent call last): 
    File "/home/trackstarz/clabReportScraper/bsrimport.py", line 907, in <module> 
    WHERE ItemSKU = %s""", payload) 
    File "/usr/local/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 187, in execute 
    query = query % tuple([db.literal(item) for item in args]) 
TypeError: not enough arguments for format string 
[Finished in 3.1s with exit code 1]

来源

2017-08-24 eleazar olivera

你为什么认为散列会在查询中做任何事情？ –

我删除了它并发生了相同的错误 –

在查询中有8次出现'％s'，但'payload'只有7个元素。 '＃'不会注释掉部分查询;如果'c.execute'实际试图将它发送到数据库，它会产生一个语法错误。 – chepner