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This article mainly introduces how to use python to extract the pictures in PPT step by step, the article is very detailed, has a certain reference value, interested friends must read it!

First, the realization principle

In fact, the principle of implementation is very simple, our pptx file is actually a compressed package. We can directly modify the suffix of the pptx file, change it to zip, and then extract it, such as the following:

This is the decompressed file. We can find a media directory under the ppt directory, which is the picture we want. This directory contains all the multimedia files for PPT.

Knowing this, we can choose to use Python to extract the media directory in PPT and extract all the images.

2. Extract pictures from PPT. 1. Open the compressed package.

A zipfile module is provided in Python for processing compressed package files. Let's take a look at its simple operation:

From zipfile import ZipFile# opens the zip file f = ZipFile ("test.pptx") # View all files in the package for file in f.namelist (): print (file) # close the package file f.close ()

Some of the output results are as follows:

[Content_Types] .xml _ rels/.relsppt/presentation.xmlppt/slides/_rels/slide2.xml.relsppt/slides/slide1.xmlppt/slides/slide2.xmlppt/slides/slide3.xml

You can see that we printed out the file of the compressed package.

2. Decompress the file

We can also open the package in the following ways:

From zipfile import ZipFilewith ZipFile ("test.pptx") as f: for file in f.namelist (): print (file)

With the with statement, you can call the close method without display. Let's take a look at the decompression operation:

From zipfile import ZipFilewith ZipFile ("test.pptx") as f: for file in f.namelist (): # extract the file f.extract (file, path= "unzip")

The operation of decompressing the file is realized through f.extract. Here, two parameters are passed, namely, the compressed package file and the decompression path. If the compressed package has a password, you also need to pass the decompression password.

Then we need to judge that if it is a media catalog, we will decompress it. Let's add a little code:

From zipfile import ZipFilewith ZipFile ("test.pptx") as f: for file in f.namelist (): # if it is a file in the media directory, extract if file.startswith ("ppt/media/"): f.extract (file, path= "unzip")

In this way, we realize the extraction of PPT images.

Third, extract the pictures in PPT

Let's refine the above code:

Import osfrom zipfile import ZipFile# extract directory unzip_path = "unzip" # create if not os.path.exists (unzip_path): os.mkdir (unzip_path) with ZipFile ("test1/test.pptx") as f: for file in f.namelist (): if file.startswith ("ppt/media/"): f.extract (file, path=unzip_path) if the extract directory does not exist

Here we have added an unzipped directory creation so that when we execute it, we will not report an error because the directory does not exist.

In addition, it is also very convenient for us to extract the images in PPT manually, and it will not be slower than the program.

The above is all the contents of the article "how to use python to extract pictures in PPT step by step". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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