Python Bottle File Upload

Question

The following code is successfully uploading an image file using the Bottle framework.

upload = bottle.request.files.get("filPhoto01")
if upload is not None:
    name, ext = os.path.splitext(upload.filename)

    if ext not in ('.png','.jpg','.jpeg'):
        return "File extension not allowed."

    save_path = "/tmp/abc".format(category=category)
    if not os.path.exists(save_path):
        os.makedirs(save_path)

    file_path = "{path}/{file}".format(path=save_path, file=upload.filename)

    with open(file_path, 'w') as open_file:
        open_file.write(upload.file.read())

However, when I try to open this file manually after upload, I can't open the file. I can see the icon of the uploaded file with the correct size (implying the whole image was uploaded), but I cannot view it in any application like MS paint, etc.

I also tried referencing the file in my web application, but it does not render there either. What could possibly be wrong?

Answer 1

Just a guess, but since it sounds like you're on Windows, you'll want to write the file in binary mode:

with open(file_path, 'wb') as open_file:

(Also, you didn't mention your Python version, but FYI in Python 3 you'd need to use binary mode even on Linux.)