小编gun*_*tan的帖子

这是我正在爬行的网站。一开始我没有问题，但是后来我遇到了这个错误。

[scrapy] DEBUG: Redirecting (meta refresh) to <GET https://www.propertyguru.com.my/distil_r_captcha.html?requestId=9f8ba25c-3673-40d3-bfe2-6e01460be915&httpReferrer=%2Fproperty-for-rent%2F1> from <GET https://www.propertyguru.com.my/property-for-rent/1>

网站知道我是机器人，并将我重定向到带有验证码的页面。我认为handle_httpstatus_listordont_redirect不起作用，因为重定向不是通过 http 状态代码完成的。这是我的爬虫代码。有什么办法可以阻止这种重定向吗？

class MySpider(CrawlSpider):

    name = 'myspider'

    start_urls = [
        'https://www.propertyguru.com.my/property-for-rent/1',
    ]

    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36'
    }
    meta = {
        'dont_redirect': True
    }


    def parse(self, response):    
        items = response.css('div.header-container h3.ellipsis a.nav-link::attr(href)').getall()

        if items:
            for item in items:
                if item.startswith('/property-listing/'):
                    yield scrapy.Request(
                        url='https://www.propertyguru.com.my{}'.format(item),
                        method='GET',
                        headers=self.headers,
                        meta=self.meta,
                        callback=self.parse_items
                    )

    def parse_items(self, response): …

我在 viewpager 中有 3 个主要片段，它们有几个按钮。我希望每个按钮导航到另一个片段，后退按钮返回主片段。我试图添加片段事务，但它不起作用。我在这里做错了什么？

这是主要片段之一

public class OneFragment extends Fragment implements View.OnClickListener{


    public OneFragment() {

    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        return inflater.inflate(R.layout.fragment_one, container, false);
    }


    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.aButton:
                FragmentManager manager = getFragmentManager();
                FragmentTransaction transaction = manager.beginTransaction();
                transaction.replace(R.id.fragment_one, AFragment.newInstance()); 
                transaction.commit();
                break;
        }
    }
}

这是我要导航的片段

public class AFragment extends Fragment{

    public AFragment() {

    }
    public static AFragment newInstance() { …

I'm trying to use different weights for my model and I need those weights add up to 1 like this;

def func(length):
    return ['a list of numbers add up to 1 with given length']

func(4) returns [0.1, 0.2, 0.3, 0.4]

The numbers should be linearly spaced and they should not start from 0. Is there any way to achieve this with numpy or scipy?

我正在制作一个简单的转换器应用程序.尝试转换输入并在下面的EditTexts中显示它,但我的ScrollView不起作用.(字面意思什么也没做)我使用ConstraintLayout作为root,我在其中有LinearLayout,它是ScrollView的根.

那么,我在这里错过了什么？

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="gns.converter.LengthConversion">

    <Spinner
        android:id="@+id/spinnerTo"
        android:layout_width="120dp"
        android:entries="@array/spinnerLengthItems"
        android:layout_height="wrap_content"
        app:layout_constraintLeft_toRightOf="@+id/textFrom"
        android:layout_marginLeft="42dp"
        app:layout_constraintBaseline_toBaselineOf="@+id/textFrom"
        android:layout_marginStart="42dp" />

    <EditText
        android:id="@+id/textFrom"
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="number"
        android:textSize="20sp"
        android:hint="(From) 0"
        android:gravity="right"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_marginTop="44dp"
        android:layout_marginLeft="16dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginStart="16dp" />


    <Button
        android:id="@+id/buttonConvert"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="78dp"
        android:layout_marginTop="13dp"
        android:text="CONVERT"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textFrom"
        android:layout_marginStart="78dp" />

    <Button
        android:id="@+id/buttonClear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="42dp"
        android:layout_marginTop="23dp"
        android:text="CLEAR"
        app:layout_constraintLeft_toRightOf="@+id/buttonConvert"
        app:layout_constraintTop_toBottomOf="@+id/spinnerTo"
        android:layout_marginStart="42dp" />

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="495dp"
        android:orientation="horizontal"
        android:layout_marginRight="8dp"
        android:background="#e40707"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginLeft="8dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginTop="30dp"
        app:layout_constraintTop_toBottomOf="@+id/buttonConvert"
        app:layout_constraintHorizontal_bias="0.0">


        <ScrollView
            android:layout_width="match_parent"
            android:layout_height="fill_parent"
            >

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"> …