from docx import Document

merged_doc = Document()

file_names = ["file1.docx", "file2.docx", "file3.docx"]

for file_name in file_names:
    doc = Document(file_name)

    for element in doc.element.body:
        if isinstance(element, docx.oxml.table.CT_Tbl):
            new_table = merged_doc.add_table(rows=0, cols=len(element[0]))
            for row in element:
                new_row = new_table.add_row().cells
                for i, cell in enumerate(row):
                    new_row[i].text = cell.text

        else:
            merged_doc.element.body.append(element)

    if file_name != file_names[-1]:
        merged_doc.add_page_break()

merged_doc.save("merged.docx")