ValueError 不支持格式字符 'd' 与 psycopg2 [英] ValueError usupported format character 'd' with psycopg2

问题描述

我有这样的代码:

print "company_id = %d" % company_id
...
db.cursor.execute("insert into person (company_id, first, last, type) values (%d, '%s', '%s', %d);", (company_id, name[0], name[1], type))

我得到以下输出:

company_id = 1
Traceback (most recent call last):
...
  File "./GetPeople.py", line 125, in insertPerson
    db.cursor.execute("insert into person (company_id, first, last, type) values (%d, '%s', '%s', %d);",     

为什么它可以打印出第一行，但它会为 db.cursor.execute() 调用提供错误?

Why can it print out the first line but it gives an error for the db.cursor.execute() call?

推荐答案

%s 占位符周围的单引号不正确且未使用 %d 根据文档.改变

The single quotes around the %s placeholders are incorrect and the %d isn't used as per the docs. Change

db.cursor.execute("insert into person (company_id, first, last, type) values (%d, '%s', '%s', %d);", (company_id, name[0], name[1], type))

到

db.cursor.execute("insert into person (company_id, first, last, type) values (%s, %s, %s, %s);", (company_id, name[0], name[1], type))

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