如何修改Pathlib代码，批量遍历指定匹配子目录中的文件？

Here's how you can adjust your code to target only FolderA and FolderB under each of your main directories:

import pathlib

root = "/path/to/your/main/directory"  # Replace with your actual root path
p = pathlib.Path(root)

# Iterate through each main folder first
for main_folder in p.iterdir():
    if not main_folder.is_dir():
        continue  # Skip any files in the root directory
    
    # Check for FolderA and process its files
    folder_a = main_folder / "FolderA"
    if folder_a.exists() and folder_a.is_dir():
        for img_file in folder_a.rglob("*.jpg"):
            # Do something for each image file in FolderA
            print(f"Processing: {img_file}")
    
    # Check for FolderB and process its files
    folder_b = main_folder / "FolderB"
    if folder_b.exists() and folder_b.is_dir():
        for img_file in folder_b.rglob("*.jpg"):
            # Do something for each image file in FolderB
            print(f"Processing: {img_file}")

Key Changes Explained: #

• We first loop through each item in your root directory with p.iterdir(), and skip any non-directory items to focus only on your main folders.
• For each main folder, we explicitly check if FolderA and FolderB exist (and are directories) before processing their contents.
• Using folder_a.rglob("*.jpg") ensures we still capture all JPG files in FolderA and any subfolders it might have—same for FolderB.

If you want a more concise approach (making it easier to add/remove target subfolders later), you can use this version:

import pathlib

root = "/path/to/your/main/directory"
p = pathlib.Path(root)
target_subfolders = {"FolderA", "FolderB"}

for main_folder in p.iterdir():
    if not main_folder.is_dir():
        continue
    
    for subfolder_name in target_subfolders:
        subfolder = main_folder / subfolder_name
        if subfolder.exists() and subfolder.is_dir():
            for img_file in subfolder.rglob("*.jpg"):
                # Do something for each image file
                print(f"Processing: {img_file}")

内容的提问来源于stack exchange，提问作者Peter Connolly