I'd like to view a Django template in the browser. This particular template is called in render_to_string, but is not connected to a view, so I can't just runserver and navigate to the URL at my localhost.
My idea was to simply call render_to_string in the Django shell and somehow pass the resulting string to a web browser such as Chrome to view it. However, as far as I can tell the webbrowser module only accepts url arguments and can't be used to render strings representing HTML.
Any idea how I could achieve this?
Use Data URL:
import base64
html = b"..."
url = "text/html;base64," + base64.b64encode(html)
webbrowser.open(url)
you could convert the html string to url:
https://docs.python.org/2/howto/urllib2.html
Following Launch HTML code in browser (that is generated by BeautifulSoup) straight from Python, I wrote a test case in which I write the HTML to a temporary file and use the file:// prefix to turn that into a url accepted by webbrowser.open():
import tempfile
import webbrowser
from django.test import SimpleTestCase
from django.template.loader import render_to_string
class ViewEmailTemplate(SimpleTestCase):
def test_view_email_template(self):
html = render_to_string('ebay/activate_to_family.html')
fh, path = tempfile.mkstemp(suffix='.html')
url = 'file://' + path
with open(path, 'w') as fp:
fp.write(html)
webbrowser.open(url)
(Unfortunately, I found that the page does not contain images referenced by Django's static tag, but that's a separate issue).
Here's a more concise solution which gets around the possible ValueError: startfile: filepath too long for Windows error in the solution by #marat:
from pathlib import Path
Path("temp.html").write_text(html, encoding='utf-8')
webbrowser.open("temp.html")
Path("temp.html").unlink()
Related
I am using the python webbrowser module to try and open a html file. I added a short thing to get code from a website to view, allowing me to store a web-page incase I ever need to view it without wifi, for instance a news article or something else.
The code itself is fairly short so far, so here it is:
import requests as req
from bs4 import BeautifulSoup as bs
import webbrowser
import re
webcheck = re.compile('^(https?:\/\/)?(www.)?([a-z0-9]+\.[a-z]+)([\/a-zA-Z0-9#\-_]+\/?)*$')
#Valid URL Check
while True:
url = input('URL (MUST HAVE HTTP://): ')
check = webcheck.search(url)
groups = list(check.groups())
if check != None:
for group in groups:
if group == 'https://':
groups.remove(group)
elif group.count('/') > 0:
groups.append(group.replace('/', '--'))
groups.remove(group)
filename = ''.join(groups) + '.html'
break
#Getting Website Data
reply = req.get(url)
soup = bs(reply.text, 'html.parser')
#Writing Website
with open(filename, 'w') as file:
file.write(reply.text)
#Open Website
webbrowser.open(filename)
webbrowser.open('https://www.youtube.com')
I added webbrowser.open('https://www.youtube.com') so that I knew the module was working, which it was, as it did open up youtube.
However, webbrowser.open(filename) doesn't do anything, yet it returns True if I define it as a variable and print it.
The html file itself has a period in the name, but I don't think that should matter as I have made a file without it as the name and it wont run.
Does webbrowser need special permissions to work?
I'm not sure what to do as I've removed characters from the filename and even showed that the module is working by opening youtube.
What can I do to fix this?
From the webbrowser documentation:
Note that on some platforms, trying to open a filename using this function, may work and start the operating system’s associated program. However, this is neither supported nor portable.
So it seems that webbrowser can't do what you want. Why did you expect that it would?
adding file:// + full path name does the trick for any wondering
I have seen that there are many different versions of rendering html using Django or Flask, but is it possible to render html generated via python to display in a browser?
If so, can a browser be specified or is it the default system broswer?
I have code now that will give me a pandas data frame in html format (using .to_html()) but I need to have this opened in a browser.
there is a module called webbrowser that does it
#!/usr/bin/python36
import webbrowser, os
with open(filename, "w") as f: f.write(html)
browser_path = 'C:/Program Files (x86)/Google/Chrome/Application/chrome.exe %s'
webbrowser.get(browser_path).open('file://' + os.path.realpath(filename))
I am trying to download a pdf from a webpage using urllib. I used the source link that downloads the file in the browser but that same link fails to download the file in Python. Instead what downloads is a redirect to the main page.
import os
import urllib
os.chdir(r'/Users/file')
url = "http://www.australianturfclub.com.au/races/SectionalsMeeting.aspx?meetingId=2414"
urllib.urlretrieve (url, "downloaded_file")
Please try downloading the file manually from the link provided or from the redirected site, the link on the main page is called 'sectionals'.
Your help is much appreciated.
It is because the given link redirects you to a "raw" pdf file. Examining the response headers via Firebug, I am able to get the filename sectionals/2014/2607RAND.pdf (see screenshot below) and as it is relative to the current .aspx file, the required URI should be switched to (in your case by changing the url variable to this link) http://www.australianturfclub.com.au/races/sectionals/2014/2607RAND.pdf
In python3:
import urllib.request
import shutil
local_filename, headers = urllib.request.urlretrieve('http://www.australianturfclub.com.au/races/SectionalsMeeting.aspx?meetingId=2414')
shutil.move(local_filename, 'ret.pdf')
The shutil is there because python save to a temp folder (im my case, that's another partition so os.rename will give me an error).
I'm trying to open a local file using urllib2. How can I go about doing this? When I try the following line with urllib:
resp = urllib.urlopen(url)
it works correctly, but when I switch it to:
resp = urllib2.urlopen(url)
I get:
ValueError: unknown url type: /path/to/file
where that file definitely does exit.
Thanks!
Just put "file://" in front of the path
>>> import urllib2
>>> urllib2.urlopen("file:///etc/debian_version").read()
'wheezy/sid\n'
In urllib.urlopen method: If the URL parameter does not have a scheme identifier, it will opens a local file. but the urllib2 doesn't behave like this.
So, the urllib2 method can't process it.
It's always be good to include the 'file://' schema identifier in both of the method call for the url parameter.
I had the same issue and actually, I just realized that if you download the source of the page, and then open it on chrome your browser will show you the exact local path on the url bar. Good luck!
Using the webbrowser module, I want to open a specific page on last.fm.
It picks a line from a text file then prints it. I want it to add that line at the end of:
webbrowser.open('http://www.last.fm/music/')
So for example, the random.choice picks example artist. I want example artist to be added at the end of the url correctly.
Any help is appreciated.
Use the urlparse.urljoin function to build up the full destination URL:
import urlparse
import webbrowser
artist_name = 'virt'
url = urlparse.urljoin('http://www.last.fm/music/', artist_name)
# Will open http://www.last.fm/music/virt in your browser.
webbrowser.open(url)