docx_helper.py

from docx import Document


def process_file(path_to_docx, path_to_new_docx, changes_to_apply):
    """
    Tries to open the docx document using given path to file.
    Then, applies the transformations- replaces template tags
    in format of ##name## to values specified in the second
    argument.
    """
    doc = Document(path_to_docx)
    for paragraph in doc.paragraphs:
        for placeholder, replacement in changes_to_apply.items():
            if placeholder in paragraph.text:
                paragraph.text = paragraph.text.replace(placeholder, replacement)

    doc.save(path_to_new_docx)