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Python PPTX workaround to add Transitions to slides

I successfully automated the creation of pptx presentations using python-pptx, customising background, inserting text, images, etc.
How can I add custom Transitions to my slides? (E.g. "Transitions" > "Fade" from PowerPoint). As I could not find a function, my idea is to use workaround functions (going deep into xml): where do I start?
python 3.10.4,
PowerPoint v16.54,
MacOS Big Sur 11.6

So, on playing with this, the following worked for me:
xml = '''
<mc:AlternateContent xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006">
<mc:Choice xmlns:p14="http://schemas.microsoft.com/office/powerpoint/2010/main" Requires="p14">
<p:transition xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" spd="slow" p14:dur="3400">
<p14:ripple />
</p:transition>
</mc:Choice>
<mc:Fallback>
<p:transition xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" spd="slow">
<p:fade />
</p:transition>
</mc:Fallback>
</mc:AlternateContent>
'''
xmlFragment = parse_xml(xml)
slide.element.insert(-1, xmlFragment)
Where slide is the slide object in python-pptx.
You probably need the following import:
from pptx.oxml import parse_xml
Where I have ripple I first tested with reveal - and that worked as well. I'm sure there are other transitions. Before I attempt to add them to md2pptx I will want to find some more and figure out what kind of UI I want to surface them with.
Hope this helps.
(Edited for grammar.)

trying to make a video using moviepy

Having a issue with my code. I'm getting a list index out of range index error
import os
import moviepy.video.io.ImageSequenceClip
image_folder= r'C:\Users\Porsche\OneDrive - Imperial College London\Documents\plates'
fps=1
image_files = [image_folder+'/'+img for img in os.listdir(image_folder) if img.endswith(".jpeg")]
clip = moviepy.video.io.ImageSequenceClip.ImageSequenceClip(image_files, fps=fps)
clip.write_videofile('my_video.mp4')
I'm new to Python and I can't seem to see where the index is and the documentation I found for moviepy was not clear.
the error is on this line
clip = moviepy.video.io.ImageSequenceClip.ImageSequenceClip(image_files, fps=fps)

I just used ImageSequenceClip 5 minutes ago to successfully make a small video so maybe I can assist.
Below are issues related to what I saw in your code and related to problems I had with ImageSequenceClip also. I didn't experience an index error similar to what you've mentioned, but that may be due to your list comprehension line.
A few general suggestions--maybe this will be enough or helpful in other projects you work on:
Careful with your '/' and '\'; keep these uniform to avoid any unwanted issues popping up. I typically use / in all cases for Windows filesystems and it seems to work fine. Also, when manually combining path+filename variables don't forget to include a final '/' at the end of the path variable.
Print out and check the length of the image_files variable you create to make sure you are actually adding the files you wanted and there are no other obvious issues with your list comprehension line.
If you can't locate the issue causing the index error, you can try adding just the folder with the image files only (instead of a list of individual image file locations). In this case, you might need to make a new folder with the files you want included only.
the fps argument was counterintuitive, for me at least. The lower the value, the longer the duration of the individual images in the video.
Finally, the directory you provide to the ImageSequenceClip function will sort the files in alphanumeric order based on the filenames. Keep this in mind as, for example, a1, a2, a11 will be reordered into a1, a11, a2.

How to find objects in floor plan image in Tkinter python through svg file?

I have a vectorized floorplan image. I want to identify the objects in the image through the vector data in the SVG file of that image. The SVG code does not have any close points(z) in between them. So I am unable to understand when does the point moves to the other object? Can somebody help me, please?
I have very little knowledge about these SVG files and using them in Tkinter. So please somebody help me or suggest me what can I do?
This is the vector data of the image.
vector data of the image

use in conjunction with SO floorplan question.
Jump to z_final_floorplan.svg for final file.
A
Create 4 files:
w_original_floorplan.svg
x_rough_static_floorplan.svg
y_rough_live_floorplan.svg
z_final_floorplan.svg
w_original_floorplan.svg and x_rough_static_floorplan.svg are identical apart from filename.
y_rough_live_floorplan.svg and z_final_floorplan.svg are empty; to be populated.
Copy x_rough_static_floorplan.svg to y_rough_live_floorplan.svg.
Open y_rough_live_floorplan.svg on browser using server.
x_rough_static_floorplan.svg find all M and replace with two newlines / symbol M (case sensitive). shift + enter shift + enter /M
B
[this section takes the time]
Take away 1st '/' in path in y_rough_live_floorplan.svg [shows blackout_floorplan]
Label x_rough_static_floorplan.svg code section blackout_floorplan where code is.
(this file is used as rough-work, so being xml / svg valid is irrelevant)
In y_rough_live_floorplan.svg find next '/' and delete it [shows floorplan_top_left_whiteout]
Label x_rough_static_floorplan.svg code section floorplan_top_left_whiteout where code is.
Have x_rough_static_floorplan.svg and y_rough_live_floorplan.svg open in 2 windows, will be going back and forth to each of them. Keep repeating until at end.
(hint: find tool seems to be on switching from files in vscode, so you can use find / and next one cmd + g easily) Maybe handy to have a paper printout of original svg as reference and label the names of objects you create e.g.bath, sink, table, as you go along (don’t be fooled by this, one table is 'table'. Is 2nd chair chair2, chair_2, chair_two etc.?) etc..
C
Reorder the whole labels and corresponding code in path x_rough_static_floorplan.svg so the labels are ordered next to each other, but in the order they are found in the path:
e.g.
…
floorplan
bath
sink
table_chairs
sofa
…
Use the 'find' tool here. This process, itself will require a temp file to copy and paste to rather than reorder within the file working on. And rewrite temp to file working on. Might be good idea to create checklist of objects and cross-off as done.
E.g. floorplan, bath, table_chairs, sink…
D
Create path elements from your grouped objects, putting each id as id=“floorplan_main”, id=“bath”, id=“sink” etc.. etc..
Bear in mind, the data of how this is drawn is really, really bad. Really they should be drawn with rect elements for a rectangle when possible and a lot of the path data is very unnecessary, but that’s obviously how the application generates the svg.

How to create PDFOutline programmatically

I'm having trouble trying to create Table of Contents objects in a PDF file. I'm not sure whether I've understood the process from Apple's limited documentation.
I'm using python, but cogent examples in any language are welcome to explain how it's supposed to work. The code creates a new PDF document, but there's no outline item visible in Preview. I've tried just using myOutline as the root object, but that doesn't work either.
pdfURL = NSURL.fileURLWithPath_(infile)
myPDF = Quartz.PDFDocument.alloc().initWithURL_(pdfURL)
if myPDF:
# Create Destination
myPage = myPDF.pageAtIndex_(1)
pagePoint = Quartz.CGPointMake(0,0)
myDestination = Quartz.PDFDestination.alloc().initWithPage_atPoint_(myPage, pagePoint)
# Create Outline
myOutline = Quartz.PDFOutline.alloc().init()
myOutline.setLabel_("Interesting")
myOutline.setDestination_(myDestination)
# Create a root Outline and add the first outline as a child
rootOutline = Quartz.PDFOutline.alloc().init()
rootOutline.insertChild_atIndex_(myOutline, 0)
# Add the root outline to the document and save
myPDF.setOutlineRoot_(rootOutline)
myPDF.writeToFile_(outfile)
EDIT: Actually, the outline IS getting saved to the new file: I can read it programmatically, and it appears in Acrobat as a Bookmark; however, it doesn't show up in Preview's Table of Contents (yes, I checked for the "Hide" thing). If I add another Bookmark in Acrobat, then both show up in Preview.
So I guess that either I'm still doing something wrong which doesn't quite 'finish' the PDFOutline data properly, and Acrobat is being kind; or there's a massive bug in PDFKit that means you can't write PDFOutlines properly. I get the same behaviour on Mountain Lion, FWIW.

This does appear to be a bug in Preview. It will not list the Table of Contents if it contains ONLY ONE child entry.
If I add more Outlines with the code above, then all of them appear in Preview. If use other software to remove all but one entries in the Table of Contents, then Preview will not show any.

Read binary data off Windows clipboard, in Blender (python)

EDIT: Figured THIS part out, but see 2nd post below for another question.
(a little backstory here, skip ahead for the TLDR :) )
I'm currently trying to write a few scripts for Blender to help improve the level creation workflow for a game that I play (Natural Selection 2). Currently, to move geometry from the level editor to Blender, I have to 1) Save a file from the editor as an .obj 2) import obj into blender, and make my changes. Then I 3) export to the game's level format using an exporter script I wrote, and 4) re-open the file in a new instance of the editor. 5) copy the level data from the new instance. 6) paste into the main level file. This is quite a pain to do, and quite clearly discourages even using the tool at all but for major edits. My idea for an improved workflow: 1) Copy data to clipboard in editor 2) Run importer script in Blender to load data. 3) Run exporter script in blender to save data. 4) Paste back into original file. This not only cuts out two whole steps in the tedious process, but also eliminates the need for extra files cluttering up my desktop. Currently though, I haven't found a way to read in clipboard data from the Windows clipboard into Blender... at least not without having to go through some really elaborate installation steps (eg install python 3.1, install pywin32, move x,y,z to the blender directory, uninstall python 3.1... etc...)
TLDR
I need help finding a way to write/read BINARY data to/from the clipboard in Blender. I'm not concerned about cross-platform capability -- the game tools are Windows only.
Ideally -- though obviously beggars can't be choosers here -- the solution would not make it too difficult to install the script for the layman. I'm (hopefully) not the only person who is going to be using this, so I'd like to keep the installation instructions as simple as possible. If there's a solution available in the python standard library, that'd be awesome!
Things I've looked at already/am looking at now
Pyperclip -- plaintext ONLY. I need to be able to read BINARY data off the clipboard.
pywin32 -- Kept getting missing DLL file errors, so I'm sure I'm doing something wrong. Need to take another stab at this, but the steps I had to take were pretty involved (see last sentence above TLDR section :) )
TKinter -- didn't read too far into this one as it seemed to only read plain-text.
ctypes -- actually just discovered this in the process of writing this post. Looks scary as hell, but I'll give it a shot.

Okay I finally got this working. Here's the code for those interested:
from ctypes import *
from binascii import hexlify
kernel32 = windll.kernel32
user32 = windll.user32
user32.OpenClipboard(0)
CF_SPARK = user32.RegisterClipboardFormatW("application/spark editor")
if user32.IsClipboardFormatAvailable(CF_SPARK):
data = user32.GetClipboardData(CF_SPARK)
size = kernel32.GlobalSize(data)
data_locked = kernel32.GlobalLock(data)
text = string_at(data_locked,size)
kernel32.GlobalUnlock(data)
else:
print('No spark data in clipboard!')
user32.CloseClipboard()

Welp... this is a new record for me (posting a question and almost immediately finding an answer).
For those interested, I found this: How do I read text from the (windows) clipboard from python?
It's exactly what I'm after... sort of. I used that code as a jumping-off point.
Instead of CF_TEXT = 1
I used CF_SPARK = user32.RegisterClipboardFormatW("application/spark editor")
Here's where I got that function name from: http://msdn.microsoft.com/en-us/library/windows/desktop/ms649049(v=vs.85).aspx
The 'W' is there because for whatever reason, Blender doesn't see the plain-old "RegisterClipboardFormat" function, you have to use "...FormatW" or "...FormatA". Not sure why that is. If somebody knows, I'd love to hear about it! :)
Anyways, haven't gotten it actually working yet: still need to find a way to break this "data" object up into bytes so I can actually work with it, but that shouldn't be too hard.
Scratch that, it's giving me quite a bit of difficulty.
Here's my code
from ctypes import *
from binascii import hexlify
kernel32 = windll.kernel32
user32 = windll.user32
user32.OpenClipboard(0)
CF_SPARK = user32.RegisterClipboardFormatW("application/spark editor")
if user32.IsClipboardFormatAvailable(CF_SPARK):
data = user32.GetClipboardData(CF_SPARK)
data_locked = kernel32.GlobalLock(data)
print(data_locked)
text = c_char_p(data_locked)
print(text)
print(hexlify(text))
kernel32.GlobalUnlock(data_locked)
else:
print('No spark data in clipboard!')
user32.CloseClipboard()
There aren't any errors, but the output is wrong. The line print(hexlify(text)) yields b'e0cb0c1100000000', when I should be getting something that's 946 bytes long, the first 4 of which should be 01 00 00 00. (Here's the clipboard data, saved out from InsideClipboard as a .bin file: https://www.dropbox.com/s/bf8yhi1h5z5xvzv/testLevel.bin?dl=1 )