如果你在跑selenium脚本时，需要某些异常不知道怎么解决时，可以看看这一系列的文章，看看有没有你需要的答案
报错：NameError: name 'NoSuchElementException' is not defined 如图 ?...解决方法： 头部加一句：from selenium.common.exceptions import NoSuchElementException 可解决 ?...参考：https://stackoverflow.com/questions/19200497/python-selenium-webscraping-nosuchelementexception-not-recognized
捕获异常后可以打印出异常原因，这样以便于分析异常原因 2.从如下异常内容可以看出，发生异常原因是：NoSuchElementException selenium.common.exceptions.NoSuchElementException...to locate element: {"method":"id","selector":"blog_nav_newpostxx"} 3.从selenium.common.exceptions 导入 NoSuchElementException...三、参考代码： # coding:utf-8 from selenium import webdriver from selenium.common.exceptions import NoSuchElementException...yoyoketang/") # 定位首页"新随笔" try: element = driver.find_element("id", "blog_nav_newpostxx") except NoSuchElementException...msg: print u"查找元素异常%s"%msg # 点击该元素 # 交流QQ群：232607095 else: element.click() 四、selenium常见异常 1.NoSuchElementException
nsee = new NoSuchElementException( appendStats("Unable to activate object...nsee = new NoSuchElementException( appendStats("Unable to validate...异常，跳出循环；只有在不为null且allocate失败的时候会重置为null继续循环；另外如果是create出来的但是activate不成功也会抛出NoSuchElementException异常，跳出循环...nsee = new NoSuchElementException( appendStats("Unable to validate...跳出循环，否则重置为null继续循环总结一下就是如果是create有异常(JedisException)则直接抛出，如果borrow不到(即使经过create)也会抛出NoSuchElementException
nsee = new NoSuchElementException( appendStats("Unable to activate object...nsee = new NoSuchElementException( appendStats("Unable to validate...异常，跳出循环；只有在不为null且allocate失败的时候会重置为null继续循环；另外如果是create出来的但是activate不成功也会抛出NoSuchElementException异常，跳出循环...nsee = new NoSuchElementException( appendStats("Unable to validate...(Pool exhausted)跳出循环；如果blockWhenExhausted为true，block之后获取到的还是null，也会抛出NoSuchElementException(Timeout waiting
poll 队列空时：return null examine element 队列空时：NoSuchElementException peek 队列空时：return null 二、双端队列(Deque...也就是说，使用时必须判空 pollFirst 队列空时：return null removeLast 队列空时：NoSuchElementException pollLast 队列空时：return...null examine getFirst (变态，element成了get) 队列空时：NoSuchElementException 使用时必须判空 peekFirst 队列空时：return null...getLast 队列空时：NoSuchElementException peekLast 队列空时：return null 三、栈 Deque定义了LIFO的栈操作 栈方法 内部调用 备注 push...addFirst 1、元素不能为空 2、可能抛出异常，内部调用的是addFirst pop removeFirst 队列空时，会抛出异常NoSuchElementException peek peekFirst
{ 51 String value = getValue(key); 52 if (value==null){ 53 throw new NoSuchElementException...defaultValue; 64 } 65 66 /** 67 * 取出Integer类型的Property，System优先 68 * @throws NoSuchElementException...{ 71 String value = getValue(key); 72 if (value==null){ 73 throw new NoSuchElementException...90 String value = getValue(key); 91 if (value == null) { 92 throw new NoSuchElementException...109 String value = getValue(key); 110 if (value == null) { 111 throw new NoSuchElementException
If validation fails, a {@code NoSuchElementException} * is thrown....method will either block (if * {@link #getBlockWhenExhausted()} is true) or throw a * {@code NoSuchElementException...} } if (p == null) { throw new NoSuchElementException...; } } else { if (p == null) { throw new NoSuchElementException...nsee = new NoSuchElementException( "Unable to activate object");
* 如果流为空，抛出[NoSuchElementException]。...as S, value) } else { value } } if (accumulator === NULL) throw NoSuchElementException...* 为空流抛出[NoSuchElementException]，为流抛出[IllegalStateException] * 包含多个元素的。...* 如果流为空，则抛出[NoSuchElementException]。...= NULL collectWhile { result = it false } if (result === NULL) throw NoSuchElementException
* * @return the first element in this list * @throws NoSuchElementException if this list...* * @return the last element in this list * @throws NoSuchElementException if this list...* * @return the first element from this list * @throws NoSuchElementException if this...* * @return the last element from this list * @throws NoSuchElementException if this...* * @return the last element in this list * @throws NoSuchElementException if this list
If validation fails, a {@code NoSuchElementException} * is thrown....method will either block (if * {@link #getBlockWhenExhausted()} is true) or throw a * {@code NoSuchElementException...} } else { if (p == null) { throw new NoSuchElementException...nsee = new NoSuchElementException( "Unable to activate object");...nsee = new NoSuchElementException( "Unable to validate object");
它们会在链表为空时，抛NoSuchElementException 下面再看peek()和peekFirst() /** * Retrieves, but does not remove...* * @return the last element in this list * @throws NoSuchElementException if this list...* * @return the first element from this list * @throws NoSuchElementException if this...* * @return the last element from this list * @throws NoSuchElementException if this...(); return unlinkLast(l); } 可以看到removeLast()在链表为空时将抛出NoSuchElementException pollLast()
1、封装一个函数，判断当前元素是否存在 from selenium.common.exceptions import NoSuchElementException def isElementExist(...用来判断元素标签是否存在， """ try: element = driver.find_element_by_xpath(xpath_value) # 原文是except NoSuchElementException..., e: except NoSuchElementException as e: # 发生了NoSuchElementException异常，说明页面中未找到该元素，返回False
") { intercept[NoSuchElementException] { Set.empty.head } } } //FlatSpec import org.scalatest.FlatSpec...An empty Set" should "have size 0" in { assert(Set.empty.size == 0) } it should "produce NoSuchElementException...when head is invoked" in { intercept[NoSuchElementException] { Set.empty.head } } } //FunSpec...when head is invoked") { intercept[NoSuchElementException] { Set.empty.head...") { forAll(examples) { set => a [NoSuchElementException] should be thrownBy { set.head }
empty).or(() -> Stream.of(3).findAny()).ifPresent(System.out::println); 然后是java10中出现的 如果有值则获取，无则直接抛出NoSuchElementException...异常 /** * If a value is present, returns the value, otherwise throws * {@code NoSuchElementException...* * @return the non-{@code null} value described by this {@code Optional} * @throws NoSuchElementException...value is present * @since 10 */ public T orElseThrow() { if (value == null) { throw new NoSuchElementException
org.openqa.selenium.Cookie; 14 import org.openqa.selenium.JavascriptExecutor; 15 import org.openqa.selenium.NoSuchElementException...return new JSWebElement((RemoteWebElement)wd.findElementById(using)); 249 }catch (NoSuchElementException...return new JSWebElement((RemoteWebElement)wd.findElementByXPath(using)); 265 }catch (NoSuchElementException...return new JSWebElement((RemoteWebElement)wd.findElementByLinkText(using)); 273 }catch (NoSuchElementException...using)); 282 return new JSWebElement((RemoteWebElement)we); 283 }catch (NoSuchElementException
expected_conditions as EC from selenium.common.exceptions import TimeoutException, ElementNotVisibleException, NoSuchElementException...1.NoSuchElementException：没有找到元素 2.NoSuchFrameException：没有找到iframe 3.NoSuchWindowException:没找到窗口句柄handle...import Keys from selenium.webdriver.support.ui import Select from selenium.common.exceptions import NoSuchElementException...is_element_present(self, how, what): try: self.driver.find_element(by=how, value=what) except NoSuchElementException...is_element_present(self, how, what): try: self.driver.find_element(by=how, value=what) except NoSuchElementException
selenium.webdriver.common.keys import Keys from time import sleep from selenium.common.exceptions import NoSuchElementException...print("元素找到了") element = driver.find_elements_by_class_name('home-btn-2') print(“按钮找到了”) except NoSuchElementException...selenium.webdriver.support.ui import Select from time import sleep from selenium.common.exceptions import NoSuchElementException...try: driver.find_element_by_xpath("//*[contains(text(), 'cb7: normal checkbox')]").click() except NoSuchElementException...//www.***.com/") sleep(5) try: driver.find_element_by_css_selector("li.login").click() except NoSuchElementException
fun String.first(): Char { if (isEmpty()) { throw NoSuchElementException("String is empty") }...例如上面的方法里面，我们也可以这么写: fun String.first(): Char { if (length < 1) { throw NoSuchElementException("...Intrinsics.checkParameterIsNotNull($this$first, "$this$first"); if ($this$first.length() < 1) { throw (Throwable)(new NoSuchElementException...var String.first: Char get() { if (isEmpty()) { throw NoSuchElementException(“String is empty...CharSequence)$this$first; boolean var2 = false; if (var1.length() == 0) { throw (Throwable)(new NoSuchElementException
游标前没有元素就报 java.util.NoSuchElementException 的错，所以使用前最好判断一下; int nextIndex() 返回游标后边元素的索引位置，初始为 0 ；遍历...N 个元素结束时为 N; int previousIndex() 返回游标前面元素的位置，初始时为 -1，同时报 java.util.NoSuchElementException 错; void...return result; } catch (IndexOutOfBoundsException e) { throw new NoSuchElementException...AbstractList.this.add(pos + 1, object); } catch (IndexOutOfBoundsException e) { throw new NoSuchElementException...return result; } catch (IndexOutOfBoundsException e) { throw new NoSuchElementException
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