import fitz # PyMuPDF
import calendar
import sys
assert len(sys.argv) == 2, "need start year as the one and only parameter"
startyear = sys.argv[1]
assert startyear.isnumeric(), "year must be positive numeric"
startyear = int(startyear)
assert startyear > 0, "year must be positive numeric"
doc = fitz.open() # new empty PDF
cal = calendar.LocaleTextCalendar(locale = "de") # choose your locale
txt = cal.formatyear(startyear, m = 4, c = 10)
doc.insertPage(-1, txt, fontname = "Courier", width = 842, height = 595)
txt = cal.formatyear(startyear + 1, m = 4, c = 10)
doc.insertPage(-1, txt, fontname = "Courier", width = 842, height = 595)
txt = cal.formatyear(startyear + 2, m = 4, c = 10)
doc.insertPage(-1, txt, fontname = "Courier", width = 842, height = 595)
doc.save("calendar.pdf", garbage = 4, deflate = True)
