获取输入信息的 SQL 代码 tin python

Question

我有以下 Python 函数，它使用 SQL 代码并给出了特定的关键字来进行一些计算。如何重新定义此函数，使其向用户询问关键字，即关键字不必在 SQL 代码中预定义？

代码如下：

def proto(cursor):
    cursor.execute('select protein.accession, keyword from protein JOIN protein_keywords ON protein.accession=protein_keywords.accession JOIN species ON protein.species_id=species.species_id where keyword="Zytocin";')
    return cursor.fetchall()

根据答案编辑：

def zroto(cursor):
    cursor.execute('select latin AS ART, count(*) AS Antal from protein, species where species.species_id = protein.species_id group by species.species_id;')
    return cursor.fetchall()


def proto(cursor):
     sql = 'select protein.accession, keyword from protein JOIN protein_keywords 
     ON protein.accession=protein_keywords.accession JOIN species ON 
     protein.species_id=species.species_id where keyword = ?;'

     k=input('Enter the value of keyword')
     cursor.execute(sql,[k],)
     return cursor.fetchall()

def main(db_file):
    con, cur = get_connection(db_file)
    zroto_1 = zroto(cur)
    proto_1 = proto(cur)
    for row in zroto_1, proto_1:
        print(row)

Answer 1

您将使用准备好的语句：

sql = 'select protein.accession, keyword from protein JOIN protein_keywords ON protein.accession=protein_keywords.accession JOIN species ON protein.species_id=species.species_id where keyword = %s;'
cursor.execute(sql, ("Zytocin",))
return cursor.fetchall()