C11/Tasks/gctools/pdf_merge.py

from PyPDF2 import PdfMerger
from pathlib import Path


def main(base_dir):
    target = base_dir + '/Z.07 Einzelbetrachtung_lfd_Monat_gesamt.pdf'
    Path(target).unlink()
    pdfs = [f for f in Path(base_dir).glob('Z.07 Einzelbetrachtung_lfd_Monat_*.pdf')]

    merger = PdfMerger()

    for pdf in pdfs:
        merger.append(pdf)

    merger.write(target)
    merger.close()


if __name__ == '__main__':
    main('C:\\GlobalCube\\ReportOutput')