从变量插入 sqlite3

Question

我一直在尝试创建一个数据库，我的表的列名来自一个列表：import sqlite3L     = ["Nom","Age","Taille"]list2 = ["Karl", "11", "185"]M = []R = 0con = sqlite3.connect(":memory:")con.execute("CREATE TABLE master ("+",".join(L)+")")然后要么：for e in L:    R += 1    con.execute("INSERT INTO master("+",".join(L)+") VALUES (?,?,?)",list2[R-1])或者for e in L:    R += 1    con.execute("INSERT INTO master(e) VALUES (?)",list2[R-1])或者listX=[list2[0],list2[1],list2[3])con.executemany("INSERT INTO master ("+",".join(L)+") VALUES ("+",".join(M)+")", (listX))

Answer 1

在你的情况下：

import sqlite3

con = sqlite3.connect(":memory:")

columns = ["Nom", "Age", "Taille"]

columns_str = '"' + '","'.join(columns) + '"'

con.execute(f"CREATE TABLE people ({columns_str})")

data = [

  ('Karl', 11, 185)

]

stmt = f"INSERT INTO people ({columns_str}) VALUES (?, ?, ?)"

con.executemany(stmt, data)

另外，可能不要打电话给你的桌子master——稍后会变得非常混乱。L像和 之类的名字list2也没有帮助。明确命名变量，按照它们的含义或包含的内容命名。未来的你会感谢你的。

也许更干净一点：

import sqlite3

con = sqlite3.connect(":memory:")

columns = ("Nom", "Age", "Taille")

con.execute("CREATE TABLE people (%s, %s, %s)" % columns)

data = [

  ('Karl', 11, 185)

]

stmt = f"INSERT INTO people (%s, %s, %s) VALUES (?, ?, ?)" % columns

con.executemany(stmt, data)