Can i connect python to html?
There are two subproblems in your problem: Show
Mako can help you with the first one. For the second one there are different solutions available that depend on your situation. Generate HTMLFirst you have to decide on a template, that means on the general skeleton in which your data will then be filled in. If you only want to show your data without any further information enigmas answer will work, but if it gets more complicated it is useful to use something as mako. How does a general template look like? Here is a really simple one:
This doesn't do very much. It's just like a single string. So lets get some python in it:
This template contains a variable which you will need to provide:
You will at least need for loops:
This is the basic syntax for a loop. Of course you can do more complex things. Imagine mylist is a
list of
You can use arbitrary HTML inside of that. Ofcourse mako can do more powerfull things, but a single stackoverflow post is to little space for that. You can read the basic usage and/or Syntax page of the mako language for mor information. But with the here presented structures you should be able to finish your task. Serve HTMLYou still need to somehow bring the HTML out to the web or where ever you want it. You have multiple possibilities that depend on what you want: Static or dynamic
Lan or WWW?
Allows you to be able to embed Python within HTML documents, similiar to mod_Python or PHP. SummaryBy taking advantage of both the Module: digiweb and a slightly modified version of PythonInsideHTML.zip from the BSD licensed project Karrigell Python web server to make it a stand alone library. It is possible to run embed Python within a HTML document that can be executed at run time. Inside HTMLSyntaxBy enclosing Python statements within a <% %> tag the Python interpreter will execute said statements. In the following example a "stored_time" variable will be created and will save the time on the local scope. <% import time %> <% stored_time = time.strftime("%d:%m:%y",time.localtime(time.time())) %> If enclosed with <%= %> it will evaluate the statement and replace the tag with the result of the executed statement. In the following example the HTML created will contain the day:month:year from the devices internal clock. <% import time %> <%= time.strftime("%d:%m:%y",time.localtime(time.time())) %> IndentationDeclared IndentationA file is converted into Python code, which must be indented according to Python rules ; whereas in normal HTML indentation is used only for readability. So beware if you mix Python and HTML : 1 <% for i in range(10): %> 2 <%= i %>*<%= i %> : <%= i*i %> This will work because after a loop or a condition the following HTML is automatically indented by PIH. To decrement indentation, use <% end %> : 1 <% for i in range(10): %> 2 <%= i %>*<%= i %> : <%= i*i %> 3 <% end %> 4 in this example, "done" will be written after the for loop is finished. Another example for an if... else... : 1 <% if i: %> 2 output someting 3 <% end %> 4 <% else: %> 5 output someting else 6 <% end %> 7 (Don't forget the last <% end %> otherwise "done" would have the same indentation as line 5) But this : 1 <% for i in range(10): 2 data= '%s * %s' %(i,i) %> 3 <%= i*i %> 4 Won't work, because after the print statement on line 2 indentation goes back to 0 (it begins with plain HTML). The |
A cell | 10
1
Number | 4Square | 5
---|---|
<%= i %> | 10<%= i**2 %> | 11
In line 7, <% is aligned on
Ending Script
If you want to exit the script before the end of the document, raise a
SCRIPT_END exception raise SCRIPT_END,message
Writing to HTML output
If you want to write to the HTML output without using the evaluating tags you can write directly to the Python code output via
py_code.write( "Heading
" )
Working example from the Python
For this example we will create a generic handler for a filetype for the web server by using the Module:digiweb.
# test_pih.py import sys,time,digiweb sys.path.append("WEB/Python/PythonInsideHTML.zip") from PythonInsideHTML import PIH def http_handler(type, path, headers, args): exec PIH("WEB/Python%s"%(path)).PythonCode() return (digiweb.TextHtml,py_code.getvalue()) hnd = digiweb.Callback(http_handler) while (True): time.sleep(1000)
Now you can just upload a file ending in a via the Python file management section of the webui, then just navigate to http://device_address/filename.
For example uploading the following (template.pih) will demonstrate displaying information about the HTTP request passed to the http_handler. The Python code generated by this script is run on the same scope as the http_handler function so has access to the arguments (type, path, headers, args).
Request info <%= type %> request for path '<%= path %>'
Headers:
<%= h %> | <%= headers[h] %> |
Args: <%= args %>
Navigating your browser to "http://device_address/template.pih" will give you a page displaying information about the HTTP request.
GET request for path '/template.pih' ________________________________________ Headers: host device_address referer agent Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/1.0.154.48 Safari/525.19 ________________________________________ Args: None ________________________________________
Source
by importing the following module you can use these features: Media:PythonInsideHTML.zip
Related
Module: digiweb
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Python inside HTML updated on 11 Jun 2018 12:08 PM