Create PDF from scratch - write strings to PDF in Python. Fore reference and credits please visit: http://com.puter.tips/2016/12/create-pdf-from-python.html

writeToPdf.py

import io
from reportlab.platypus import SimpleDocTemplate, Paragraph
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.lib.units import inch
from reportlab.lib.pagesizes import letter
 
buf = io.BytesIO()

doc = SimpleDocTemplate(
    buf,
    rightMargin=inch/2,
    leftMargin=inch/2,
    topMargin=inch/2,
    bottomMargin=inch/2,
    pagesize=letter,
)

styles = getSampleStyleSheet()
paragraphs = []
paragraphs.append(Paragraph('This is first line', styles['Normal']))
paragraphs.append(Paragraph('This is last line', styles['Normal']))
doc.build(paragraphs)

with open('demo.pdf', 'wb') as fd:
    fd.write(buf.getvalue())