Develop Reference

How to download auto generated file in Django?

I am created a basic ocr system. When user uploads a PDF file to system ocr read it and created a xlsm file with the same name. I am using remote control with Azure (Windows). I created a download button. When I click it, downloads the file with same name, so it should work but appears a error.
How can I fix this problem?
<a href= "{% static path %}" class="btn btn-outline-primary btn-sm" download>Download Report File</a>
in my views:
name = pdf.pdf.name.replace(".xlsm", "").replace(".pdf", "")
path = "C:/user/ocr/" + name + ".xlsm"
Note: Uploaded and created files are stored outside of the project file.

please get more error info from django server. and list more code from my views.
Do you want to change file filename?

Read from uploaded XLSX file in Python CGI script using Pandas

I am creating a tool where either
A new XLSX file is generated for the user to download
The user can upload an XLSX file they have, I will read the contents of that file, aand use them to generate a new file for the user to download.
I would like to make use of Pandas to read the XLSX file into a dataframe, so I can work with it easily. However, I can't get it working. Can you help me?
Example extract from CGI file:
import pandas as pd
import cgi
from mako.template import Template
from mako.lookup import TemplateLookup
import http.cookies as Cookie
import os
import tempfile
import shutil
import sys
cookie = Cookie.SimpleCookie(os.environ.get("HTTP_COOKIE"))
method = os.environ.get("REQUEST_METHOD", "GET")
templates = TemplateLookup(directories = ['templates'], output_encoding='utf-8')
if method == "GET": # This is for getting the page
template = templates.get_template("my.html")
sys.stdout.flush()
sys.stdout.buffer.write(b"Content-Type: text/html\n\n")
sys.stdout.buffer.write(
template.render())
if method == "POST":
form = cgi.FieldStorage()
print("Content-Type: application/vnd.ms-excel")
print("Content-Disposition: attachment; filename=NewFile.xlsx\n")
output_path = "/tmp/" + next(tempfile._get_candidate_names()) + '.xlsx'
data = *some pandas dataframe previously created*
if "editfile" in form:
myfilename = form['myfile'].filename
with open(myfilename, 'wb') as f:
f.write(form['myfile'].file.read())
data = pd.read_excel(myfilename)
data.to_excel(output_path)
with open(path, "rb") as f:
sys.stdout.flush()
shutil.copyfileobj(f, sys.stdout.buffer)
Example extract from HTML file:
<p>Press the button below to generate a new version of the xlsx file</p>
<form method=post>
<p><input type=submit value='Generate new version of file' name='newfile'>
<div class="wrapper">
</div>
</form>
<br>
<p>Or upload a file.</p>
<p>In this case, a new file will be created using the contents of this file.</p>
<form method="post" enctype="multipart/form-data">
<input id="fileupload" name="myfile" type="file" />
<input value="Upload and create new file" name='editfile' type="submit" />
</form>
This works without the if "editfile" in form: bit so I know something is going wrong when I am trying to access the file that the user has uploaded.
The problem is that whilst a file is created, the created file has a file size of 0 KB and will not open in Excel. Crucially, the file that the user has uploaded can not be found in the location that I have written it out.

You've passed myfilename to pandas; however that file doesn't exist on the server yet. You'll have to save the file somewhere locally first before using it.
The following will download the file to the current directory (same directory as the CGI script). Of course, you're welcome to save it to some more suitable directory, depending on your setup.
form = cgi.FieldStorage()
myfilename = form['myfile'].filename
with open(myfilename, 'wb') as f: # Save the file locally
f.write(form['myfile'].file.read())
data = pd.read_excel(myfilename)

Problem with PDF download that I cannot open

I am working on a script to extract text from law cases using https://case.law/docs/site_features/api. I have created methods for search and create-xlsx, which work well, but I am struggling with the method to open an online pdf link, write (wb) in a temp file, read and extract the data (core text), then close it. The ultimate goal is to use the content of these cases for NLP.
I have prepared a function (see below) to download the file:
def download_file(file_id):
http = urllib3.PoolManager()
folder_path = "path_to_my_desktop"
file_download = "https://cite.case.law/xxxxxx.pdf"
file_content = http.request('GET', file_download)
file_local = open( folder_path + file_id + '.pdf', 'wb' )
file_local.write(file_content.read())
file_content.close()
file_local.close()
The script works well as it download the file and it created on my desktop, but, when I try to open manually the file on the desktop I have this message from acrobat reader:
Adobe Acrobat Reader could not open 'file_id.pdf' because it is either not a supported file type or because the file has been damager (for example, it was sent as a email attachments and wasn't correctly decoded
I thought it was the Library so I tried with Requests / xlswriter / urllib3... (example below - I also tried to read it from the script to see whether it was Adobe that was the issue, but apparently not)
# Download the pdf from the search results
URL = "https://cite.case.law/xxxxxx.pdf"
r = requests.get(URL, stream=True)
with open('path_to_desktop + pdf_name + .pdf', 'w') as f:
f.write(r.text)
# open the downloaded file and remove '<[^<]+?>' for easier reading
with open('C:/Users/amallet/Desktop/r.pdf', 'r') as ff:
data_read = ff.read()
stripped = re.sub('<[^<]+?>', '', data_read)
print(stripped)
the output is:
document.getElementById('next').value = document.location.toString();
document.getElementById('not-a-bot-form').submit();
with 'wb'and 'rb' instead (and removing the *** stripped *** the sript is:
r = requests.get(test_case_pdf, stream=True)
with open('C:/Users/amallet/Desktop/r.pdf', 'wb') as f:
f.write(r.content)
with open('C:/Users/amallet/Desktop/r.pdf', 'rb') as ff:
data_read = ff.read()
print(data_read)
and the output is :
<html>
<head>
<noscript>
<meta http-equiv="Refresh" content="0;URL=?no_js=1&next=/pdf/7840543/In%20re%20the%20Extradition%20of%20Garcia,%20890%20F.%20Supp.%20914%
20(1994).pdf" />
</noscript>
</head>
<body>
<form method="post" id="not-a-bot-form">
<input type="hidden" name="csrfmiddlewaretoken" value="5awGW0F4A1b7Y6bx
rYBaA6GIvqx4Tf6DnK0qEMLVoJBLoA3ZqOrpMZdUXDQ7ehOz">
<input type="hidden" name="not_a_bot" value="yes">
<input type="hidden" name="next" value="/pdf/7840543/In%20re%20
the%20Extradition%20of%20Garcia,%20890%20F.%20Supp.%20914%20(1994).pdf" id="next">
</form>
<script>
document.getElementById(\'next\').value = document.loc
ation.toString();
document.getElementById(\'not-a-bot-form\').submit();
</script>
<a href="?no_js=1&next=/pdf/7840543/In%20re%20the%20Extradition%20of%20Garcia,%2
0890%20F.%20Supp.%20914%20(1994).pdf">Click here to continue</a>
</body>
</html>
but none are working. The pdf is not protected by a password, and I tried on other website and it doesn't work either.
Therefore, I am wondering whether I have another issue that is not link to the code itself.
Please let me know if you need additional information.
thank you

It looks like instead of the PDF the web server is providing you with a web page intended to prevent bots from downloading data from the site.
There is nothing wrong with your code, but if you still want to do this you'll have to work around the bot prevention of the website.

html text area default value messing with page

I have a python cgi script that creates a text area and fills it with default value from the contents of a file. This used to work but recently I noticed that with change in content on the file ;the html is rendered incorrectly and the submit button and some parts of the file contents to be shown in the text area(as default content) etc is missing or messing up with the total page's html
print('<form action="x.cgi" method="post">')
print('<textarea name="textcontent" cols="120" rows="50">')
with open('somefile', 'r') as content_file:
content = content_file.read()
content_file.close()
print(content)
print('</textarea>')
print('<HR>')
print('<input type="submit" value="Submit" />')
print('</form>')
What can be done so that the contents of somefile doesnt mess with the html form . Note that somefile is a configuration file and I need everything in the file to be printed as such so user can make necessary change and submit it

Creation of a simple HTML file upload page

First, I don't need any functions more than upload a file. No progress bar, no file type, or size check, no multiple files.
What I want is the most simple HTML webpage to handle the upload and save the file with the name I specified.
I tried to use this:
<form action="../cgi-bin/upload.py" method="post" enctype="multipart/form-data">
<input type="file" name="upload" />
<input type="submit" /></form>
In upload.py:
#!/usr/bin/python
import os
import commands
import cgi, cgitb
cgitb.enable()
print "Content-Type: text/html"
print
print 'start!'
form = cgi.FieldStorage()
filedata = form['upload']
But I don't know how to save this in file, like "Beautiful.mp3".
Can any body help?
Though, really, I don't want to use any scripts. I just want the most basic html pages. Python scripts will only exist when there must be some CGI handlers. Flash is not preferred.

The filedata object will wrap a file-like object that can be treated like a regular file. Basically you would do this:
if filedata.file: # field really is an upload
with file("Beautiful.mp3", 'w') as outfile:
outfile.write(filedata.file.read())
Or, you could do just about anything else with it, using read(), readlines() or readline()