Using tempfile with FPDF on streamlit

Using Streamlit
,
1

So I was making an app using streamlit and when I tried to use tempfile, it shows this error-

2024-05-13 11:10:51.538 Uncaught app exception

Traceback (most recent call last):

  File "/home/adminuser/venv/lib/python3.11/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 600, in _run_script

    exec(code, module.__dict__)

  File "/mount/src/neri/pages/korean_instruction_2.py", line 91, in <module>

    pdf.add_page()

  File "/home/adminuser/venv/lib/python3.11/site-packages/fpdf/fpdf.py", line 904, in add_page

    self.header()

  File "/mount/src/neri/pages/korean_instruction_2.py", line 69, in header

    regular_font(8)

  File "/mount/src/neri/pages/korean_instruction_2.py", line 47, in regular_font

    pdf.add_font('NotoSansKR-Regular.ttf','',regular_font_dir.name, uni=True)

  File "/home/adminuser/venv/lib/python3.11/site-packages/fpdf/fpdf.py", line 1810, in add_font

    raise ValueError(

ValueError: Unsupported font file extension: . add_font() used to accept .pkl file as input, but for security reasons this feature is deprecated since v2.5.1 and has been removed in v2.5.3.

If you don’t mind, could you help me out? Does tempfile makes the file in the temp directory into pkl file while using Streamlit?
Below is my code-

import streamlit as st
import requests
import tempfile
from fpdf import FPDF
from streamlit import session_state as sss

if st.button('try_1'):
    def regular_font(arg):
        if 'regular_font_dir' not in sss:
            response_regular = requests.get("mygithubdir/NotoSansKR-Regular.ttf", stream=True)        
            regular_font_dir = tempfile.NamedTemporaryFile(delete=False)
            with open(regular_font_dir.name, 'wb') as f:
                for chunk in response_regular.iter_content(chunk_size=1024):
                    if chunk:
                        f.write(chunk)
                pdf.add_font('NotoSansKR-Regular.ttf','',regular_font_dir.name, uni=True)
                pdf.set_font('NotoSansKR-Regular.ttf', '', arg)
                sss.regular_font_dir=True
        else:
            pdf.add_font('NotoSansKR-Regular.ttf','',regular_font_dir.name, uni=True)
            pdf.set_font('NotoSansKR-Regular.ttf', '', arg)
    def thick_font(arg):
        if 'thick_font_dir' not in sss:
            response_thick = requests.get("mygithubdir/NotoSansKR-SemiBold.ttf", stream=True)        
            thick_font_dir = tempfile.NamedTemporaryFile(delete=False)
            with open(thick_font_dir.name, 'wb') as f:
                for chunk in response_regular.iter_content(chunk_size=1024):
                    if chunk:
                        f.write(chunk)
                pdf.add_font('NotoSansKR-SemiBold.ttf','',thick_font_dir.name, uni=True)
                pdf.set_font('NotoSansKR-SemiBold.ttf', '', arg)
                sss.thick_font_dir=True
        else:
            pdf.add_font('NotoSansKR-SemiBold.ttf','',thick_font_dir.name, uni=True)
            pdf.set_font('NotoSansKR-SemiBold.ttf', '', arg)        
    class PDF(FPDF):
        def header(self):
            regular_font(8)
            # Title
            self.cell(30, 10, '', 0, 0, 'C')
            # Line break
            self.ln(20)
        # Page footer
        def footer(self):
            # Position at 1.5 cm from bottom
            self.set_y(-15)
            regular_font(8)
            # Page number
            self.cell(0, 10, 'Page ' + str(self.page_no()) + '/{nb}', 0, 0, 'C')

    # Margin
    m = 10 
    # Page width: Width of A4 is 210mm
    pw = 210 - 2*m
    # Cell height
    ch = 50

    pdf = PDF()
    pdf.alias_nb_pages()
    pdf.add_page()
    thick_font(15)
2

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.