如何将 zip 文件的子集导入 colab？

Question

I have a very big zip file in my google drive which contain several subfloders. Now, I'd like to extract only a few subfolders (not all folder into colab). Is there any way for this?

For instance, suppose the zip file name is "MyBigFile.zip" which contain "folder1", "folder2", "folder3", "folder4", and "folder5". I only want to import and extract "folder1",and "folder4" into my google colab (and better import only 200 images from it only). How is it possible? any suggestion?

*if this is related: each folder 1-5 contains around 50000.png files

Answer 1

After some searching I found something. You can use the zipfile module in google collab too.

from zipfile import ZipFile
from google.colab import drive

drive.mount('/content/drive')

zipfile = ZipFile("Zip File Path") # MyBigFile.zip
def extract(folderName, numberOfFiles):
    files = list(filter(lambda x: x.startswith(folderName), zipfile.namelist()))[:numberOfFiles]
    for file in files:
        zipfile.extract(file, 'Output Folder Path')  # extractedFolder
 
extract("folder1/", 200)
zipfile.close()

You can remove google.colab code why mounting drive manually clicks on this button.

After That, you can remove these two lines of code.

from zipfile import ZipFile
# from google.colab import drive

# drive.mount('/content/drive')

zipfile = ZipFile("MyBigFile.zip")
def extract(folderName, numberOfFiles):
    files = list(filter(lambda x: x.startswith(folderName), zipfile.namelist()))[:numberOfFiles]
    for file in files:
        zipfile.extract(file, 'extractedFolder')

extract("folder1/", 200)
zipfile.close()

Answer 2

You need to mount your Google Drive through Colab first:

from google.colab import drive
drive.mount('/content/drive')

Now unzip only specific folders where you want them:

!unzip /path_to/MyBigFile.zip 'folder1/*' -d /path_to_unzip