This has been pissing me off from yesterday, and I'm just out of ideas.
I'm trying to write a PDF with a subclassed pdfkit.PDFKit (let's call it MyPDFKit): it works well (I just subclassed it to add the possibility of using xvfb-run in the args). I specify that is not a problem of the class.
I was trying to convert some HTML to PDF. The template looks like this:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- Simplified for reading. -->
<style type="text/css">..</style>
</head>
<body>
<!-- Simplified for reading. -->
{% for obj in objs %}
<div>
<div>
<p>{{ obj.name }}</p>
</div>
<p>{{ obj.age }}</p>
</div>
{% endfor %}
</body>
</html>
With these template, and objs having near 400 instances, the output of the HTML is near 5k lines.
The problem comes when trying to splash that into the file. It could be in one of this two places:
MyPDFKit.to_pdf(..) (called from MyPDFKit.from_string(..))'s stdout has a limit size, and truncates part of the string (source code of the function is here).
f.write(..) is the one that truncates the string you pass in.
Cannot be a problem of the template or of the objects' data, because I can create PDFs correctly when getting only a certain range of then (more than 350 items in the same rendering starts leading to the problem due to HTML number of lines). For example, objs[:315] works well, but objs[:350] not.
I've tried setting the buffer size to -1, which is unlimited, but also don't work. Anyone had this issue before?
Ok, so finally, with the help of another programmer, I found the issue.
It looks like PDFKit, when processing a large amount of HTML (in number of PDF pages we're talking more than 349 more or less), sends progress bars comments to the buffer to see how it goes. Then, when it finish, also sends a done comment message.
This comments (I say comments to give they a type of data, cause I don't know really how PDF files handle comments), in programs like Adobe Reader, cannot be handle, so it detects that the file is corrupted/damage, while in programs like SumatraPDF/Edge, it just ignores then and shows the PDF nicely.
Now, how to prevent this behaviour? Passing the --quiet argument. But, for that, you'll need to subclass PDFKit (as I did with MyPDFKit), and add the args manually (line of code).
Problem solved.
EDIT
Seems that I can pass --quiet in the options kwargs, so no need of subclassing if that's only the problem (although it would be nice to have it active by default...)
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I am trying to add this python code into my website. How can I go about referencing the python code into the html? ? Sorry I'm a total n00b to development, just started coding a week ago, aylmao.
python
>>> print "papa bless."
html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>GETTING STARTED WITH BRACKETS</title>
<meta name="description" content="An interactive getting started guide for Brackets.">
<link rel="stylesheet" href="style.css">
</head>
<body>
<h1>GETTING STARTED WITH BRACKETS</h1>
<h2>This is your guide!</h2>
<!--
MADE WITH <3 AND JAVASCRIPT
-->
<p>
Welcome to Brackets, a modern open-source code editor that understands web design. It's a lightweight,
yet powerful, code editor that blends visual tools into the editor so you get the right amount of help
when you want it.
</p>
<!--
WHAT IS BRACKETS?
-->
<p>
<em>Brackets is a different type of editor.</em>
Brackets has some unique features like Quick Edit, Live Preview and others that you may not find in other
editors. Brackets is written in JavaScript, HTML and CSS. That means that most of you using Brackets
have the skills necessary to modify and extend the editor. In fact, we use Brackets every day to build
Brackets. To learn more about how to use the key features, read on.
</p>
<!--
GET STARTED WITH YOUR OWN FILES
-->
<h3>Projects in Brackets</h3>
<p>
In order to edit your own code using Brackets, you can just open the folder containing your files.
Brackets treats the currently open folder as a "project"; features like Code Hints, Live Preview and
Quick Edit only use files within the currently open folder.
</p>
<samp>
Once you're ready to get out of this sample project and edit your own code, you can use the dropdown
in the left sidebar to switch folders. Right now, the dropdown says "Getting Started" - that's the
folder containing the file you're looking at right now. Click on the dropdown and choose "Open Folder…"
to open your own folder.
You can also use the dropdown later to switch back to folders you've opened previously, including this
sample project.
</samp>
<!--
THE RELATIONSHIP BETWEEN HTML, CSS AND JAVASCRIPT
-->
<h3>Quick Edit for CSS and JavaScript</h3>
<p>
No more switching between documents and losing your context. When editing HTML, use the
<kbd>Cmd/Ctrl + E</kbd> shortcut to open a quick inline editor that displays all the related CSS.
Make a tweak to your CSS, hit <kbd>ESC</kbd> and you're back to editing HTML, or just leave the
CSS rules open and they'll become part of your HTML editor. If you hit <kbd>ESC</kbd> outside of
a quick inline editor, they'll all collapse. Quick Edit will also find rules defined in LESS and
SCSS files, including nested rules.
</p>
<samp>
Want to see it in action? Place your cursor on the <!-- <samp> --> tag above and press
<kbd>Cmd/Ctrl + E</kbd>. You should see a CSS quick editor appear above, showing the CSS rule that
applies to it. Quick Edit works in class and id attributes as well. You can use it with your
LESS and SCSS files also.
You can create new rules the same way. Click in one of the <!-- <p> --> tags above and press
<kbd>Cmd/Ctrl + E</kbd>. There are no rules for it right now, but you can click the New Rule
button to add a new rule for <!-- <p> -->.
</samp>
<a href="screenshots/quick-edit.png">
<img alt="A screenshot showing CSS Quick Edit" src="screenshots/quick-edit.png" />
</a>
<p>
You can use the same shortcut to edit other things as well - like functions in JavaScript,
colors, and animation timing functions - and we're adding more and more all the time.
</p>
<p>
For now inline editors cannot be nested, so you can only use Quick Edit while the cursor
is in a "full size" editor.
</p>
<!--
LIVE PREVIEW
-->
<h3>Preview HTML and CSS changes live in the browser</h3>
<p>
You know that "save/reload dance" we've been doing for years? The one where you make changes in
your editor, hit save, switch to the browser and then refresh to finally see the result?
With Brackets, you don't have to do that dance.
</p>
<p>
Brackets will open a <em>live connection</em> to your local browser and push HTML and CSS updates as you
type! You might already be doing something like this today with browser-based tools, but with Brackets
there is no need to copy and paste the final code back into the editor. Your code runs in the
browser, but lives in your editor!
</p>
<h3>Live Highlight HTML elements and CSS rules</h3>
<p>
Brackets makes it easy to see how your changes in HTML and CSS will affect the page. When your cursor
is on a CSS rule, Brackets will highlight all affected elements in the browser. Similarly, when editing
an HTML file, Brackets will highlight the corresponding HTML elements in the browser.
</p>
<samp>
If you have Google Chrome installed, you can try this out yourself. Click on the lightning bolt
icon in the top right corner of your Brackets window or hit <kbd>Cmd/Ctrl + Alt + P</kbd>. When
Live Preview is enabled on an HTML document, all linked CSS documents can be edited in real-time.
The icon will change from gray to gold when Brackets establishes a connection to your browser.
Now, place your cursor on the <!-- <img> --> tag above. Notice the blue highlight that appears
around the image in Chrome. Next, use <kbd>Cmd/Ctrl + E</kbd> to open up the defined CSS rules.
Try changing the size of the border from 10px to 20px or change the background
color from "transparent" to "hotpink". If you have Brackets and your browser running side-by-side, you
will see your changes instantly reflected in your browser. Cool, right?
</samp>
<p class="note">
Today, Brackets only supports Live Preview for HTML and CSS. However, in the current version, changes to
JavaScript files are automatically reloaded when you save. We are currently working on Live Preview
support for JavaScript. Live previews are also only possible with Google Chrome, but we hope
to bring this functionality to all major browsers in the future.
</p>
<h3>Quick View</h3>
<p>
For those of us who haven't yet memorized the color equivalents for HEX or RGB values, Brackets makes
it quick and easy to see exactly what color is being used. In either CSS or HTML, simply hover over any
color value or gradient and Brackets will display a preview of that color/gradient automatically. The
same goes for images: simply hover over the image link in the Brackets editor and it will display a
thumbnail preview of that image.
</p>
<samp>
To try out Quick View for yourself, place your cursor on the <!-- <body> --> tag at the top of this
document and press <kbd>Cmd/Ctrl + E</kbd> to open a CSS quick editor. Now simply hover over any of the
color values within the CSS. You can also see it in action on gradients by opening a CSS quick editor
on the <!-- <html> --> tag and hovering over any of the background image values. To try out the image
preview, place your cursor over the screenshot image included earlier in this document.
</samp>
<h3>Need something else? Try an extension!</h3>
<p>
In addition to all the goodness that's built into Brackets, our large and growing community of
extension developers has built hundreds of extensions that add useful functionality. If there's
something you need that Brackets doesn't offer, more than likely someone has built an extension for
it. To browse or search the list of available extensions, choose <strong>File > Extension
Manager…</strong> and click on the "Available" tab. When you find an extension you want, just click
the "Install" button next to it.
</p>
<!--
LET US KNOW WHAT YOU THINK
-->
<h2>Get involved</h2>
<p>
Brackets is an open-source project. Web developers from around the world are contributing to build
a better code editor. Many more are building extensions that expand the capabilities of Brackets.
Let us know what you think, share your ideas or contribute directly to the project.
</p>
<ul>
<li>Brackets.io</li>
<li>Brackets Team Blog</li>
<li>Brackets on GitHub</li>
<li>Brackets Extension Registry</li>
<li>Brackets Wiki</li>
<li>Brackets Developer Mailing List</li>
<li>#brackets on Twitter</li>
<li>Chat with Brackets developers on IRC in #brackets on Freenode</li>
</ul>
</body>
</html>
use code tag but if you need hightlighting the check: highlight.js
<code>print('Hello')</code>
Here is an example for you even though you provided none of yours.
<!DOCTYPE html>
<html>
<body>
<pre>
<code>
>>> print "papa bless."
</code>
</pre>
</body>
</html>
I specifically modified your code by adding one more space between print and the what you have in double quotes to demonstrate what value pre tag offers here. It simply displays preformatted text the way it is provided preserving tabs, double spaces and any other typographic formatting you may use in your code.
You may run into issues with pre tag if you have long lines of code, which may overflow (or not) inside a container holding your pre tag, but you can deal with that using CSS, by adding a scroll bar
pre {
overflow: auto;
}
or simply wrapping the text...
pre {
white-space: pre-wrap;
}
Understand, that most browsers display the text wrapped in pre tags using the default setting for CSS:
<style>
pre {
display: block;
font-family: monospace;
white-space: pre;
margin: 1em 0;
}
</style>
03420 Nucleotide excision repair<br>
03430 Mismatch repair<br>
03440 Homologous recombination<br>
</ul>
</ul>
<!-- -->
<b>Environmental Information Processing</b>
<ul>
Membrane transport
<ul>
02010 ABC transporters<br>
I need to extract the pathway codes(eg. 03420, 03430 etc) from a webpage using python which I've done using Beautifulsoup. I want to stop before Environmental Information Processing so I was looking for some distinct tag here I can use. <!-- --> is at the perfect position but I can't figure out how to stop at this point. Can somebody tell me if/how I can use it to stop extracting the codes before the comment.
(I'm very new to python and html and straightaway jumping to web parsing so bear with me please.)
In HTML, XHTML, XML, the <!-- starts a commentary scope and --> finish it. It is a comment and it does not affect the result on the browser, but add some bytes on the response.
<!-- comment some text
and you can break lines.
It is compatible for html, xhtml and xml.
-->
On other languages you have other sintaxes for comments, for sample:
/* this is a comment for C, C++, C#, Java, Javascript, CSS, etc.
you can break lines */
// this is a single line comment for C, C++, C#, Java, Javascript.. you can't break lines here
See more about comments if you want on this link.
It's a block comment in html syntax. http://www.w3schools.com/html/html_comments.asp
It's an HTML comment without anything in it.
As it stands it seems to have no purpose as it fills no function in the page, but there might be a reson for it being there. I might be a place for some server code to display some internal information, so it's a bit risky to count on it staying the same.
If it is just an empty comment, the author of the page might decide to clean it away.
The text in the following tag seems more reliable to look for, as that actually serves a purpose in the page.
I am looking for advice on how I might best turn a large amount of program output into an HTML report. What I'm basically doing now is building the report up by hand. The python program I'm working with is very large and has extensive logging throughout. I'm finding the parts of the logging that I want in my report, marking that up as HTML and appending it to my final result.
I was looking around for an HTML building Python module with the hope that it may be a little more elegant than formatting a bunch of strings by hand.
This SO question seemed to suggest that HTML building modules are less desirable than newer templating modules:
python html generator
I'm a little familiar with Jinja and Django templating, but I'm not sure how that would work in my case.
Thanks for any suggestions.
There are multiple ways to generate an HTML from Python.
The cleanest option is to use a Template Engine:
create a template HTML report with placeholders for variable data
render the template with a context providing this variable data
There are multiple standalone (meaning Django is not an option) template engines in Python:
jinja2
mako
genshi
Example (using mako):
create an index.tpl template file:
<html>
<head>
<title>${title}</title>
</head>
<body>
<h1>${header}</h1>
</body>
</html>
in the python code, create a Template() instance and render the template:
>>> from mako.template import Template
>>> template = Template(filename='index.tpl')
>>> print template.render(title='My Title', header='My Header')
<html>
<head>
<title>My Title</title>
</head>
<body>
<h1>My Header</h1>
</body>
</html>
I have seen many separate answers and they just seem difficult to follow. I'm hoping someone can give me a simple explanation or at least show me a simple tutorial.
My objective is to build a web page (just on my machine for now) that will have three things: A title, a series of 5-10 dropdown menus/buttons, and a Matplotlib Plot (generated from python code). I want to be able to browse this page:
<html>
<head>
<title>My Example Web Page</title>
</head>
<body bgcolor="#ccffcc">
<form action="my .py file that I want to run when user presses submit" method="post" target="_blank">
<select name="dropdown">
<option value="Opt1" selected>Opt1</option>
<option value="Opt2">Opt2</option>
</select>
<input type="submit" value="Submit"/>
</form>
<p align="center"><img src="MY MATPLOTLIB IMAGE WOULD GO HERE???" width="100" height="100">
</body>
</html>
As seen above, I have the heading no problem. I have one dropdown box -- but when I push submit -- nothing happens. I point to "C:\Python27\myfile.py" but nothing seems to happen. I want to take in the dropdown info (which option was selected), run my code, and then return a MATPLOTLIB plot to the page. I don't understand how to do these two steps. Does anyone have any advice?
Again:
Receive information from user "submit" form
Run the .py file on "submit"
Plot resulting plot on the webpage in the appropriate spot.
FYI - I am not bad with Python programming but have never done HTML (or other web languages).
Thanks!
I'm using django-uni-form to display forms. I've included all the css and javascript (notably jquery) in the page. But now I get some weird looking lines. The image below show how it looks:
http://i243.photobucket.com/albums/ff176/cwalkrox/uni-form1.jpg
You can notice that for username and email address, the lines are aligned with the upper side of text inputs while for two passwords, the lines are below the password inputs. In uni-form's official website, I can't see any line in the 3 examples. Even if it gives me some lines, should it be consistent?
So the strange story doesn't stop here. The jquery can highlight the selected inputs. But the ways it highlights username, email and password are still inconsistent. The following images prove it:
i243.photobucket.com/albums/ff176/cwalkrox/uni-form2.jpg
i243.photobucket.com/albums/ff176/cwalkrox/uni-form3.jpg
So every problems seem to stem from the mysterious lines. So how this happens?
BTW, the page I show you is rendered with the form of django-registration. The rendering snippet is:
<form action="" method="post" class="uniForm">
<fieldset>
{{ form|as_uni_form }}
</fieldset>
</form>
Those lines are due to the css files included in django-uniform: uni-form.css, uni-form-generic.css and uni-form.jquery.css.
It seems weird but at least in my case (a pinax project) the forms look better without the provided css.
my 2 cents