如何在Tkinter中执行下一个过程之前验证mysql单元格内容

Question

我是TKINTER / PYTHON的新手

以下是一个示例语法。我想基本上继续检查MYSQL单元格以查看状态是否从down更改为其他任何内容并将更改报告给shell列表框。

我想经常检查，从而监视db活动，一旦状态根据该单元格发生变化，停止执行after（）过程并完成列表框更新。

// If there are no characters finish
if (read.empty()) {
    return 0;
}
// Get the first character
char lastChar = read[0];
int count = 1;  //  We have counted one character for now
// Go through each character (note start from 1 instead of 0)
for(int i = 1; i < read.size(); i++) {
    // Get the next char
    char newChar = read[i];
    // If it is different, print the current count and reset the counter
    if (lastChar != newChar) {
        cout << lastChar << count;
        count = 1;
        lastChar = newChar;
    } else {  // Else increase the counter
        count++;
    }
}
// Print the last one
cout << lastChar << count;

return 0;