python – psycopg2 executemany简单列表?

我正在尝试使用psycopg2 executemany进行简单的多插入,但我只能使用dict而不是“普通”值序列:

# given:
values = [1, 2, 3] ; cursor = conn.cursor()

# this raises TypeError: 'int' object does not support indexing:
cursor.executemany('INSERT INTO t (col_a) VALUES ( %s )', values)
# I also tried encapsulating my 'values' into a tuple/list but it gives another exception (TypeError: not all arguments converted during string formatting).

# while this is ok:
cursor.executemany('INSERT INTO t (col_a) VALUES ( %(value)s )', [  dict(value=v) for v in values ])

如果不使用“named”参数(%(value)s),是不是可以给出一个“简单”的列表/元组值?

最佳答案 executemany需要一系列序列,例如.列表清单:

[[v] for v in values]
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