Python-pptx: copy slide

问题

How can I copy slide?

I created a template slide and I need to copy it and edit shapes of each copy separately.

Or how I can add my template slide to presentation.slide_layouts?

回答1:

This is what I found on GitHub, and it works for me. I did change a couple of things for my project. You will need to import six and copy. I am using pptx-6.10

def duplicate_slide(pres, index):
    template = pres.slides[index]
    try:
        blank_slide_layout = pres.slide_layouts[12]
    except:
        blank_slide_layout = pres.slide_layouts[len(pres.slide_layouts)]

    copied_slide = pres.slides.add_slide(blank_slide_layout)

    for shp in template.shapes:
        el = shp.element
        newel = copy.deepcopy(el)
        copied_slide.shapes._spTree.insert_element_before(newel, 'p:extLst')

    for _, value in six.iteritems(template.part.rels):
        # Make sure we don't copy a notesSlide relation as that won't exist
        if "notesSlide" not in value.reltype:
            copied_slide.part.rels.add_relationship(
                value.reltype,
                value._target,
                value.rId
            )

    return copied_slide

Then you can create the copy with passing in your presentation and the slide index of your template:

copied_slide = duplicate_slide(pres, 4)

I am still working on editing the shapes from the copied slide, once I am further along in my project I can update

回答2:

I wanted to present my workaround to copy slides. I use a template ppt and populate it. I know before populating the slides which slides of the template need to be copied and how often. What I then do is copying the slides and saving the new ppt with the copied slides. After saving I can open the ppt with the copied slides and use pptx to populate the slides.

import win32com.client
ppt_instance = win32com.client.Dispatch('PowerPoint.Application')
#open the powerpoint presentation headless in background
read_only = True
has_title = False
window    = False
prs = ppt_instance.Presentations.open('path/ppt.pptx',read_only,has_title,window)

nr_slide = 1
insert_index = 1
prs.Slides(nr_slide).Copy()
prs.Slides.Paste(Index=insert_index)

prs.SaveAs('path/new_ppt.pptx')
prs.Close()

#kills ppt_instance
ppt_instance.Quit()
del ppt_instance

In this case the firste slide would be copied of the presentation and inserted after the first slide of the same presentation.

Hope this helps some of you!

回答3:

Since I also found another usecase for the code shared by @d_bergeron, I just wanted to share it here. In my case, I wanted to copy a slide from another presentation into the one I generated with python-pptx:

As argument I pass in the Presentation() object I created using python-pptx (prs = Presenation()).

from pptx import Presentation
import copy

def copy_slide_from_external_prs(prs):

    # copy from external presentation all objects into the existing presentation
    external_pres = Presentation("PATH/TO/PRES/TO/IMPORT/from.pptx")

    # specify the slide you want to copy the contents from
    ext_slide = external_pres.slides[0]

    # Define the layout you want to use from your generated pptx
    SLD_LAYOUT = 5
    slide_layout = prs.slide_layouts[SLD_LAYOUT]

    # create now slide, to copy contents to 
    curr_slide = prs.slides.add_slide(slide_layout)

    # now copy contents from external slide, but do not copy slide properties
    # e.g. slide layouts, etc., because these would produce errors, as diplicate
    # entries might be generated

    for shp in ext_slide.shapes:
        el = shp.element
        newel = copy.deepcopy(el)
        curr_slide.shapes._spTree.insert_element_before(newel, 'p:extLst')

    return prs

I am mainly posting it here, since I was looking for a way to copy an external slide into my presentation and ended up in this thread.

回答4:

Sorry for the delay, I was moved to another project. I was able to complete my ppt project using multiple template slides and copying them. At the end of building the presentation I delete the templates. To grab the shapes you will need to iterate through the slide.shapes and find the name of the shape that you are looking for. Once you have this returned you can then edit the shape as needed. I have added a version of the add_text function that I use to populate shape.text_frame.

def find_shape_by_name(shapes, name):
    for shape in shapes:
        if shape.name == name:
            return shape
    return None

def add_text(shape, text, alignment=None):

    if alignment:
        shape.vertical_anchor = alignment

    tf = shape.text_frame
    tf.clear()
    run = tf.paragraphs[0].add_run()
    run.text = text if text else ''

To find the shape "slide_title".

slide_title = find_shape_by_name(slide.shapes,'slide_title')

To add text to the shape.

add_text(slide_title,'TEST SLIDE')

Please let me know if you need any other assistance.

回答5:

Here is another way to copy each slide onto a single PPTX slide for an entire presentation, and then you can use LibreOffice to convert each individual powerpoint into an image:

def get_slide_count(prs):
""" Get the number of slides in PPTX presentation """
    slidecount = 0
    for slide in prs.slides:
        slidecount += 1
    return slidecount


def delete_slide(prs, slide):
    """ Delete a slide out of a powerpoint presentation"""
    id_dict = { slide.id: [i, slide.rId] for i,slide in enumerate(prs.slides._sldIdLst) }
    slide_id = slide.slide_id
    prs.part.drop_rel(id_dict[slide_id][1])
    del prs.slides._sldIdLst[id_dict[slide_id][0]]


def get_single_slide_pres(prs, slidetokeep):
    for idx, slide in enumerate(prs.slides):
        if idx < slidetokeep:
            delete_slide(prs, slide)
        elif (idx > slidetokeep):
            delete_slide(prs, slide)
    prs.save(str(slidetokeep + 1) + ".pptx")


pptxfilepath = "test.pptx"
prs = Presentation(pptxfilepath)
slidecount = get_slide_count(prs)
for i in range(slidecount):
    prs_backup = Presentation(pptxfilepath)
    get_single_slide_pres(prs_backup, i)
    prs_backup = None

来源：https://stackoverflow.com/questions/50866634/python-pptx-copy-slide

标签

python

python-pptx