PyQt5 Python：如何从 MySQL 查询结果中遍历单个数据行

Question

我正在尝试使用 Python 在 PyQt5 的 QComboBox 中添加项目。我在从每行 SQL 查询添加数据时遇到问题。

cursor = cnx.cursor()
            query = "SELECT buyerID, lastName, firstName, middleName FROM buyer ORDER BY id DESC LIMIT 5"
            cursor.execute(query)
            data = cursor.fetchall()
            item = list()
            for a, b, c, d in data:
                row = "{} | {}, {} {}".format(a, b, c, d)
                item.append(row)
            self.customerID.addItem(str(item))

这导致只有一个项目被添加到组合框中：

100000 | lastName, firstName middleName, 100000 | lastName, firstName middleName, 100000 | lastName, firstName middleName...etc.

我想在ComboBox中发生的事情是这样的（在Combo Box中总共添加5个项目）

100001 | lastName, firstName middleName
100002 | lastName, firstName middleName
100003 | lastName, firstName middleName
100004 | lastName, firstName middleName
100005 | lastName, firstName middleName

编辑：

cursor = cnx.cursor()
query = "SELECT buyerID, lastName, firstName, middleName FROM buyer ORDER BY id DESC LIMIT 5"
cursor.execute(query)
data = cursor.fetchall()
item = list()
for a, b, c, d in data:
    row = "{} | {}, {} {}".format(a, b, c, d)
    item.append(row)
    self.customerID.addItem(str(item))  <------- I just moved this line of code into the FOR loop statement to add the item per loop.

同样的问题：

添加的appended Item仍然是所有数据行合并为一个

Answer 1

在发布我的问题并自行修改之后，我偶然发现了问题的答案，因为我意识到我必须更改 FOR 循环语句以枚举来自 MySQL 查询结果的数据长度和 .addItem 到 ComboBox，然后它从 data（SQL 查询结果）的结果继续到下一个元组。 =11=]

for a in enumerate(data):                 <--- changed the for loop statement to "enumerate" how many data inside the MySQL Query Result
     j, k = a                             <--- split (index, tuple) in a
     l, m, n, o = k                       <--- separate tuple into strings
     string = "{} | {}, {} {}".format(l, m, n, o)
     self.customerID.addItem(str(string)) <------- I just moved this line of code into the FOR loop statement to add the item before moving on to the next row in SQL results.

PyQt5 Python：如何从 MySQL 查询结果中遍历单个数据行

PyQt5 Python: How to go through Individual Row of Data from MySQL Query Result

python

python-3.x

pyqt5

mysql-python

qcombobox