Question

我有这部分Python代码，可以正常工作

   import mss
   import mss.tools
   import datetime
   import time

    with mss.mss() as sct:
    monitor = sct.monitors[1]
    timestr = time.strftime("%Y%m%d-%H%M%S")
    sct.compression_level = -1
    output = "d:/screen/work/" + (timestr) + ".png".format(**monitor)
    sct_img = sct.grab(monitor)
    mss.tools.to_png(sct_img.rgb, sct_img.size, output=output)
    print(output)

我会在每个循环之间添加一个无终止循环/循环，并在每个循环之间延迟10秒，因此我以这种方式添加了 while

    import mss
    import mss.tools
    import datetime
    import time 

        while count < 100000000:

        with mss.mss() as sct:
        monitor = sct.monitors[1]
        timestr = time.strftime("%Y%m%d-%H%M%S")
        sct.compression_level = -1
        output = "d:/screen/work/" + (timestr) + ".png".format(**monitor)
        sct_img = sct.grab(monitor)
        mss.tools.to_png(sct_img.rgb, sct_img.size, output=output)
        print(output)    

        time.sleep(10)
        count += 1

但它返回此值

IndentationError：unindent与任何外部缩进级别都不匹配

如何在我的代码中添加循环？

Answer 1

在Python中，缩进没有大括号和代码块的开始/结束，因此您应该缩进Criteria criteria = new Criteria(); criteria = criteria.and("carrierCode").is("TK"); String from = "2020-02-05 00:00:00"; String to = "2020-02-05 23:59:59"; DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd H:m:s"); Date toDate = dateFormat.parse(to); Date fromDate = dateFormat.parse(from); criteria = criteria.andOperator(where("scheduledDepDateTime").gte(fromDate), where("scheduledDepDateTime").lte(toDate))); // Query qry = new Query(criteria); // List<SomeClassName> result = mongoTemplate.find(qry, SomeClassName.class, "collection_name");。它说with在with内部。

while

Answer 2

在protected function redirectTo() { if ((Auth::user())->user_role == 'admin') { return 'admin'; } elseif ((Auth::user())->user_role == 'staff') { return 'staff'; } elseif ((Auth::user())->user_role == 'student') { return 'student'; } else { return redirect('sign'); } }```之后应该总是有一个缩进

Answer 3

有几个函数需要缩进以下代码：for，while，if，with。编译器（在python中）需要缩进才能知道哪些条件语句触发了代码行。例如，您要

    time.sleep(10)
    count += 1

总是在while的每次迭代期间执行。因此，编译器需要查看：

while count < 100000000:
    with mss.mss() as sct:
        monitor = sct.monitors[1]
        timestr = time.strftime("%Y%m%d-%H%M%S")
        sct.compression_level = -1
        output = "d:/screen/work/" + (timestr) + ".png".format(**monitor)
        sct_img = sct.grab(monitor)
        mss.tools.to_png(sct_img.rgb, sct_img.size, output=output)
        print(output)    

    time.sleep(10)
    count += 1

否则，这两行仅在循环的with部分执行。

当我尝试创建循环时出现Python IndentationError

3 个答案: