Generate a Monthly Calendar PDF in Python

from calendar import TextCalendar
from datetime import datetime
from reportlab.lib.pagesizes import letter
from reportlab.pdfgen import canvas
import os

def generate_monthly_calendar_pdf(year, month, filename="calendar.pdf"):
    cal = TextCalendar()
    days = cal.monthdays2calendar(year, month)
    
    month_name = datetime(year, month, 1).strftime("%B %Y")
    c = canvas.Canvas(filename, pagesize=letter)
    width, height = letter
    
    c.setFont("Helvetica-Bold", 24)
    c.drawCentredString(width / 2, height - 60, month_name)
    
    cell_width = (width - 40) / 7
    cell_height = 30
    start_y = height - 100
    
    days_header = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
    for i, day in enumerate(days_header):
        x = 20 + i * cell_width
        c.setFont("Helvetica-Bold", 10)
        c.drawString(x + 5, start_y + 5, day)
    
    for row_idx, week in enumerate(days):
        y = start_y - (row_idx + 1) * (cell_height + 5)
        for col_idx, (day_num, _) in enumerate(week):
            if day_num != 0:
                x = 20 + col_idx * cell_width
                c.setFont("Helvetica", 9)
                c.drawString(x + 3, y + 3, str(day_num))
    
    c.save()
    return os.path.abspath(filename)

if __name__ == "__main__":
    path = generate_monthly_calendar_pdf(2025, 3, "march_2025.pdf")
    print(f"Calendar PDF saved to: {path}")