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Error message

  • Warning: Undefined array key "#submit_button" in Drupal\Core\Render\Element\Button::preRenderButton() (line 91 of core/lib/Drupal/Core/Render/Element/Button.php).
    Drupal\Core\Render\Element\Button::preRenderButton()
    call_user_func_array() (Line: 107)
    Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 876)
    Drupal\Core\Render\Renderer->doCallback() (Line: 438)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 92)
    __TwigTemplate_7a73f56f5318f4bbce87024a0c4b0513->block_content() (Line: 446)
    Twig\Template->yieldBlock() (Line: 71)
    __TwigTemplate_7a73f56f5318f4bbce87024a0c4b0513->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 57)
    __TwigTemplate_4bd1c0eb0cbe812b32e04c0e8f4586a9->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 100)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->block_content() (Line: 446)
    Twig\Template->yieldBlock() (Line: 79)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 51)
    __TwigTemplate_26ff4d3607963c25ef5d8d35d06625c5->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 98)
    __TwigTemplate_a07762ad7fd3af2e684dffdc448359ec->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 162)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 157)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() (Line: 246)
    Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
    Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
    Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 188)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
    Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 715)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "#submit_button" in Drupal\Core\Render\Element\Button::preRenderButton() (line 91 of core/lib/Drupal/Core/Render/Element/Button.php).
    Drupal\Core\Render\Element\Button::preRenderButton()
    call_user_func_array() (Line: 107)
    Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 876)
    Drupal\Core\Render\Renderer->doCallback() (Line: 438)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 100)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->block_content() (Line: 446)
    Twig\Template->yieldBlock() (Line: 79)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 90)
    __TwigTemplate_2b094f9e97a47aee0f30ce002cee4213->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 100)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->block_content() (Line: 446)
    Twig\Template->yieldBlock() (Line: 79)
    __TwigTemplate_a507212c1d1f87295d8eeb597873d07e->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 155)
    __TwigTemplate_26ff4d3607963c25ef5d8d35d06625c5->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 491)
    Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 98)
    __TwigTemplate_a07762ad7fd3af2e684dffdc448359ec->doDisplay() (Line: 402)
    Twig\Template->yield() (Line: 358)
    Twig\Template->display() (Line: 373)
    Twig\Template->render() (Line: 51)
    Twig\TemplateWrapper->render() (Line: 34)
    twig_render_template() (Line: 380)
    Drupal\Core\Theme\ThemeManager->render() (Line: 497)
    Drupal\Core\Render\Renderer->doRender() (Line: 227)
    Drupal\Core\Render\Renderer->render() (Line: 162)
    Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 157)
    Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse() (Line: 90)
    Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray() (Line: 246)
    Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
    Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
    Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 188)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
    Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 715)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "#submit_button" in Drupal\Core\Render\Element\Button::preRenderButton() (line 91 of core/lib/Drupal/Core/Render/Element/Button.php).
    Drupal\Core\Render\Element\Button::preRenderButton()
    call_user_func_array() (Line: 107)
    Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 876)
    Drupal\Core\Render\Renderer->doCallback() (Line: 438)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 250)
    Drupal\Core\Render\Renderer->doRenderRoot() (Line: 141)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140)
    Drupal\Core\Render\Renderer->renderInIsolation() (Line: 167)
    Drupal\Core\Render\Renderer->doRenderPlaceholder() (Line: 729)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
    Fiber->start() (Line: 737)
    Drupal\Core\Render\Renderer->replacePlaceholders() (Line: 262)
    Drupal\Core\Render\Renderer->doRenderRoot() (Line: 141)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140)
    Drupal\Core\Render\Renderer->renderInIsolation() (Line: 111)
    Drupal\Core\Render\Renderer->renderRoot() (Line: 253)
    Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderPlaceholders() (Line: 74)
    Drupal\big_pipe\Render\BigPipeResponseAttachmentsProcessor->processAttachments() (Line: 45)
    Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond() (Line: 246)
    Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
    Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
    Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 216)
    Symfony\Component\HttpKernel\HttpKernel->filterResponse() (Line: 204)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
    Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 715)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    
  • Warning: Undefined array key "#submit_button" in Drupal\Core\Render\Element\Button::preRenderButton() (line 91 of core/lib/Drupal/Core/Render/Element/Button.php).
    Drupal\Core\Render\Element\Button::preRenderButton()
    call_user_func_array() (Line: 107)
    Drupal\Core\Render\Renderer->doTrustedCallback() (Line: 876)
    Drupal\Core\Render\Renderer->doCallback() (Line: 438)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 510)
    Drupal\Core\Render\Renderer->doRender() (Line: 250)
    Drupal\Core\Render\Renderer->doRenderRoot() (Line: 141)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140)
    Drupal\Core\Render\Renderer->renderInIsolation() (Line: 167)
    Drupal\Core\Render\Renderer->doRenderPlaceholder() (Line: 729)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
    Fiber->start() (Line: 737)
    Drupal\Core\Render\Renderer->replacePlaceholders() (Line: 262)
    Drupal\Core\Render\Renderer->doRenderRoot() (Line: 141)
    Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}() (Line: 627)
    Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 140)
    Drupal\Core\Render\Renderer->renderInIsolation() (Line: 111)
    Drupal\Core\Render\Renderer->renderRoot() (Line: 253)
    Drupal\Core\Render\HtmlResponseAttachmentsProcessor->renderPlaceholders() (Line: 74)
    Drupal\big_pipe\Render\BigPipeResponseAttachmentsProcessor->processAttachments() (Line: 45)
    Drupal\Core\EventSubscriber\HtmlResponseSubscriber->onRespond() (Line: 246)
    Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
    Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
    Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 216)
    Symfony\Component\HttpKernel\HttpKernel->filterResponse() (Line: 204)
    Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
    Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
    Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
    Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
    Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
    Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 201)
    Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 138)
    Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 87)
    Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
    Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
    Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
    Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
    Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 715)
    Drupal\Core\DrupalKernel->handle() (Line: 19)
    

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Python History

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By
admin
, 27 December, 2021

Python

Why is it called Python?

Guido van Rossum were inspired with BBC comedy series “Monty Python’s Flying Circus”. So he decided to  implementing a new programming language called Python.

What Foundation is behind  the Python?

The Python Software Foundation is an American non-profit organization launched on March 6, 2001 that holds the copyright on Python versions 2.1 and newer. 

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