Python-pptx：复制幻灯片

Question

如何复制幻灯片？

我创建了一个模板幻灯片，我需要复制它并分别编辑每个副本的形状。

或者如何将模板幻灯片添加到 presentation.slide_layouts？

Answer 1

这是我在 GitHub 上找到的，它对我有用。 我确实为我的项目更改了一些东西。 您将需要导入六个并复制。 我正在使用 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

然后，您可以通过传入演示文稿和模板的幻灯片索引来创建副本：

copied_slide = duplicate_slide(pres, 4)

我仍在编辑复制的幻灯片中的形状，一旦我在我的项目中进一步发展，我就可以更新

Answer 2

我想展示我复制幻灯片的解决方法。 我使用模板ppt并填充它。 在填充幻灯片之前，我知道需要复制模板的哪些幻灯片以及复制频率。 然后我要做的是复制幻灯片并用复制的幻灯片保存新的ppt。 保存后，我可以使用复制的幻灯片打开 ppt 并使用 pptx 填充幻灯片。

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

在这种情况下，第一张幻灯片将复制演示文稿并插入到同一演示文稿的第一张幻灯片之后。

希望这对你们中的一些人有所帮助！

Answer 3

我正在使用n00by0815 的答案，并且在我不得不复制图像之前效果很好。 这是我处理图像的改编版本。 此代码创建图像的本地副本，然后将其添加到幻灯片中。 我确定有一种更清洁的方法，但这是有效的。

Answer 4

由于我还找到了@d_bergeron 共享代码的另一个用例，所以我只想在这里分享。 就我而言，我想将另一个演示文稿中的幻灯片复制到我使用 python-pptx 生成的幻灯片中：

作为参数，我传入了我使用 python-pptx (prs = Presenation()) 创建的 Presentation() 对象。

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

我主要在这里发布它，因为我一直在寻找一种方法将外部幻灯片复制到我的演示文稿中，并最终出现在这个线程中。

Answer 5

我编辑了@n00by0815 解决方案并提出了非常优雅的代码，它也可以无误地复制图像：

# ATTENTNION: PPTX PACKAGE RUNS ONLY ON CERTAINS VERSION OF PYTHON (https://python-pptx.readthedocs.io/en/latest/user/install.html)

from pptx import Presentation
from pptx.util import Pt
from pptx.enum.text import PP_ALIGN
import copy
import os

DIR_PATH = os.path.dirname(os.path.realpath(__file__))

#modeled on https://stackoverflow.com/a/56074651/20159015 and https://stackoverflow.com/a/62921848/20159015
#this for some reason doesnt copy text properties (font size, alignment etc.)
def SlideCopyFromPasteInto(copyFromPres, slideIndex,  pasteIntoPres):

    # specify the slide you want to copy the contents from
    slide_to_copy = copyFromPres.slides[slideIndex]

    # Define the layout you want to use from your generated pptx

    slide_layout = pasteIntoPres.slide_layouts.get_by_name("Blank") # names of layouts can be found here under step 3: https://www.geeksforgeeks.org/how-to-change-slide-layout-in-ms-powerpoint/
    # it is important for slide_layout to be blank since you dont want these "Write your title here" or something like that textboxes
    # alternative: slide_layout = pasteIntoPres.slide_layouts[copyFromPres.slide_layouts.index(slide_to_copy.slide_layout)]
    
    # create now slide, to copy contents to 
    new_slide = pasteIntoPres.slides.add_slide(slide_layout)

    # create images dict
    imgDict = {}

    # 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 slide_to_copy.shapes:
        if 'Picture' in shp.name:
            # save image
            with open(shp.name+'.jpg', 'wb') as f:
                f.write(shp.image.blob)

            # add image to dict
            imgDict[shp.name+'.jpg'] = [shp.left, shp.top, shp.width, shp.height]
        else:
            # create copy of elem
            el = shp.element
            newel = copy.deepcopy(el)

            # add elem to shape tree
            new_slide.shapes._spTree.insert_element_before(newel, 'p:extLst')
    
    # things added first will be covered by things added last => since I want pictures to be in foreground, I will add them after others elements
    # you can change this if you want
    # add pictures
    for k, v in imgDict.items():
        new_slide.shapes.add_picture(k, v[0], v[1], v[2], v[3])
        os.remove(k)

    return new_slide # this returns slide so you can instantly work with it when it is pasted in presentation



templatePres = Presentation(f"{DIR_PATH}/template.pptx")

outputPres = Presentation() 
outputPres.slide_height, outputPres.slide_width = templatePres.slide_height, templatePres.slide_width
# this can sometimes cause problems. Alternative:
# outputPres = Presentation(f"{DIR_PATH}/template.pptx") and now delete all slides to have empty presentation

# if you just want to copy and paste slide:
SlideCopyFromPasteInto(templatePres,0,outputPres)

# if you want to edit slide that was just pasted in presentation:
pastedSlide = SlideCopyFromPasteInto(templatePres,0,outputPres)
pastedSlide.shapes.title.text = "My very cool title"

for shape in pastedSlide.shapes:

    if not(shape.has_text_frame): continue

    # easiest ways to edit text fields is to put some identifying text in them
    if shape.text_frame.text == "personName": # there is a text field with "personName" written into it
        shape.text_frame.text = "Brian"

    if shape.text_frame.text == "personSalary":
        shape.text_frame.text = str(brianSalary)

    # stylizing text need to be done after you change it
    shape.text_frame.paragraphs[0].font.size = Pt(80) 
    shape.text_frame.paragraphs[0].alignment = PP_ALIGN.CENTER

outputPres.save(f'{DIR_PATH}/output.pptx')

Answer 6

抱歉耽搁了，我被转移到另一个项目。 我能够使用多个模板幻灯片并复制它们来完成我的 ppt 项目。 在构建演示文稿的最后，我删除了模板。 要抓取形状，您需要遍历 slide.shapes 并找到您要查找的形状的名称。 返回后，您可以根据需要编辑形状。 我添加了一个用于填充 shape.text_frame 的 add_text 函数版本。

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 ''

找到形状“slide_title”。

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

向形状添加文本。

add_text(slide_title,'TEST SLIDE')

如果您需要任何其他帮助，请告诉我。

Answer 7

这是将每张幻灯片复制到单个 PPTX 幻灯片以用于整个演示文稿的另一种方法，然后您可以使用 LibreOffice 将每个单独的 powerpoint 转换为图像：

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