Python 程序中的数据库锁？

程序中有一个数据库锁，如何修复

插入产品位工作正常，只是类别位告诉我数据库已锁定且不工作：

  import sqlite3
def insert_product(product):
    with sqlite3.connect("main.db") as db:
        cursor = db.cursor()
        sql = "insert into Products (CatID,Name,Qty,Price) values (?, ?, ?, ?)"
        cursor.execute(sql, product)
        db.commit()
        print("The product {0} has been inserted successfully" .format(Name))
        cursor = db.execute("SELECT ProductID, CatId, Name, Qty, Price from Products")
        for row in cursor:
            print ("ID = ", row[0])
            print ("CatID = ", row[1])
            print ("NAME = ", row[2])
            print ("Qty = ", row[3])
            print ("Price = ", row[4], "\n")


def insert_category(category):
    with sqlite3.connect("main.db") as db:
        cursor = db.cursor()
        sql = "insert into categories (Name) values (?)"
        cursor.execute(sql, category)
        db.commit()
        print("The category {0} has been inserted successfully" .format(Name))
        cursor = db.execute("SELECT CatID,Name from categories")
        for row in cursor:
            print ("CatID = ", row[0])
            print ("Name = ", row[1], "\n")



if __name__ == "__main__":
    response = input("Do you want to insert a category or a product (c/p) ?")
    if response == "p":
        ID= input("enter the CatID of the product:>> ")
        Name = input("Enter the name of the Product you want to insert: >>")
        Qty = input("Enter the quantity of the stock available: >>")
        Price = input("Enter the price of the product: >>")
        product = (ID,Name,Qty,Price)
        insert_product(product)
        print ("Product inserted successfully")
    else:
        Name = input("Enter the name of the Category you want to insert: >>")
        category = (Name,)
        insert_category(category)
        db.commit()
        print ("The new category {0} has been inserted successfully" .format(Name))

我遇到的问题是：

cursor.execute(sql, category)

sqlite3.OperationalError: database is locked

---

您好，Saqib，只有在您先保存insert product，然后尝试插入类别时才会发生这种情况吗？或者当您尝试先插入类别时也会发生这种情况？Category的CatID应该是自动生成的，并保存在db？@ChetanRanpariya中。ID是自动生成的，但现在在插入产品时也会发生。它只是不允许我使用这个代码在数据库表中插入任何内容，它说数据库被锁定，以停止程序的运行。之后，请尝试在打印后关闭连接：db.close（）@PeterRing如果您可以共享一些代码，我不知道您的确切意思。谢谢在“for row in cursor”中打印所有内容后：“使用命令“db.close（）”关闭与db的连接Hi Saqib，仅当您先保存插入产品，然后尝试插入类别时，才会发生这种情况吗？或者当您尝试先插入类别时也会发生这种情况？Category的CatID应该是自动生成的，并保存在db？@ChetanRanpariya中。ID是自动生成的，但现在在插入产品时也会发生。它只是不允许我使用这个代码在数据库表中插入任何内容，它说数据库被锁定，以停止程序的运行。之后，请尝试在打印后关闭连接：db.close（）@PeterRing如果您可以共享一些代码，我不知道您的确切意思。谢谢在“for row in cursor”中打印完所有内容后：“使用命令“db.close（）”关闭与数据库的连接”