Python pptx (Power Point) Find and replace text (ctrl + H)

问题

Question in Short: How can I use the find and replace option (Ctrl+H) using the Python-pptx module?

Example Code:

from pptx import Presentation

nameOfFile = "NewPowerPoint.pptx" #Replace this with: path name on your computer + name of the new file.

def open_PowerPoint_Presentation(oldFileName, newFileName):
    prs = Presentation(oldFileName)

    prs.save(newFileName)
open_PowerPoint_Presentation('Template.pptx', nameOfFile)

I have a Power Point document named "Template.pptx". With my Python program I am adding some slides and putting some pictures in them. Once all the pictures are put into the document it saves it as another power point presentation.

The problem is that this "Template.pptx" has all the old week numbers in it, Like "Week 20". I want to make Python find and replace all these word combinations to "Week 25" (for example).

回答1:

You would have to visit each slide on each shape and look for a match using the available text features. It might not be pretty because PowerPoint has a habit of splitting runs up into what may seem like odd chunks. It does this to support features like spell checking and so forth, but its behavior there is unpredictable.

So finding the occurrences with things like Shape.text will probably be the easy part. Replacing them without losing any font formatting they have might be more difficult, depending on the particulars of your situation.

回答2:

For those of you who just want some code to copy and paste into your program that finds and replaces text in a PowerPoint while KEEPING formatting (just like I was,) here you go:

def search_and_replace(search_str, repl_str, input, output):
    """"search and replace text in PowerPoint while preserving formatting"""
    #Useful Links ;)
    #https://stackoverflow.com/questions/37924808/python-pptx-power-point-find-and-replace-text-ctrl-h
    #https://stackoverflow.com/questions/45247042/how-to-keep-original-text-formatting-of-text-with-python-powerpoint
    from pptx import Presentation
    prs = Presentation(input)
    for slide in prs.slides:
        for shape in slide.shapes:
            if shape.has_text_frame:
                if(shape.text.find(search_str))!=-1:
                    text_frame = shape.text_frame
                    cur_text = text_frame.paragraphs[0].runs[0].text
                    new_text = cur_text.replace(str(search_str), str(repl_str))
                    text_frame.paragraphs[0].runs[0].text = new_text
    prs.save(output)

The prior is a combination of many answers, but it gets the job done. It simply replaces search_str with repl_str in every occurrence of search_str.

In the scope of this answer, you would use: search_and_replace('Week 20', 'Week 25', "Template.pptx", "NewPowerPoint.pptx")

回答3:

I know this question is old, but I have just finished a project that uses python to update a powerpoint daily. Bascially every morning the python script is run and it pulls the data for that day from a database, places the data in the powerpoint, and then executes powerpoint viewer to play the powerpoint.

To asnwer your question, you would have to loop through all the Shapes on the page and check if the string you're searching for is in the shape.text. You can check to see if the shape has text by checking if shape.has_text_frame is true. This avoids errors.

Here is where things get trickey. If you were to just replace the string in shape.text with the text you want to insert, you will probably loose formatting. shape.text is actually a concatination of all the text in the shape. That text may be split into lots of 'runs', and all of those runs may have different formatting that will be lost if you write over shape.text or replace part of the string.

On the slide you have shapes, and shapes can have a text_frame, and text_frames have paragraphs (atleast one. always. even when its blank), and paragraphs can have runs. Any level can have formatting, and you have no way of determining how many runs your string is split over.

In my case I made sure that any string that was going to be replaced was in its own shape. You still have to drill all the way down to the run and set the text there so that all formatting would be preserved. Also, the string you match in shape.text may actually be spread across multiple runs, so when setting the text in the first run, I also set the text in all other runs in that paragraph to blank.

random code snippit:

from pptx import Presentation

testString = '{{thingToReplace}}'
replaceString = 'this will be inserted'
ppt = Presentation('somepptxfile.pptx')

def replaceText(shape, string,replaceString):
    #this is the hard part
    #you know the string is in there, but it may be across many runs


for slide in ppt.slides:
    for shape in slide.shapes:
        if shape.has_text_frame:
            if(shape.text.find(testString)!=-1:
                replaceText(shape,testString,replaceString)

Sorry if there are any typos. Im at work.....

回答4:

Posting code from my own project because none of the other answers quite managed to hit the mark with strings that have complex text with multiple paragraphs without losing formating:

prs = Presentation('blah.pptx')

# To get shapes in your slides
slides = [slide for slide in prs.slides]
shapes = []
for slide in slides:
    for shape in slide.shapes:
        shapes.append(shape)

def replace_text(self, replacements: dict, shapes: List):
    """Takes dict of {match: replacement, ... } and replaces all matches.
    Currently not implemented for charts or graphics.
    """
    for shape in shapes:
        for match, replacement in replacements.items():
            if shape.has_text_frame:
                if (shape.text.find(match)) != -1:
                    text_frame = shape.text_frame
                    for paragraph in text_frame.paragraphs:
                        for run in paragraph.runs:
                            cur_text = run.text
                            new_text = cur_text.replace(str(match), str(replacement))
                            run.text = new_text
            if shape.has_table:
                for row in shape.table.rows:
                    for cell in row.cells:
                        if match in cell.text:
                            new_text = cell.text.replace(match, replacement)
                            cell.text = new_text

replace_text({'string to replace': 'replacement text'}, shapes) 

回答5:

Here's some code that could help. I found it here:

search_str = '{{{old text}}}'
repl_str = 'changed Text'
ppt = Presentation('Presentation1.pptx')
for slide in ppt.slides:
    for shape in slide.shapes:
        if shape.has_text_frame:
            shape.text = shape.text.replace(search_str, repl_str)
ppt.save('Presentation1.pptx')

来源：https://stackoverflow.com/questions/37924808/python-pptx-power-point-find-and-replace-text-ctrl-h