Download Handler

class CoSpecPy.download.DownloadHandler(download_method, no_of_connections, batch_size, download_folder)

Control acces to SDSS spectra

This class is used to handle all downloads from SDSS servers and can be customised by connection type and number to increase efficiency.

download_method

Valid download method of either wget or aria2. Controls the download of SDSS spectra

no_of_connections

For aria2 connection this defines the number of simultaneous connections to SDSS servers

batch_size

Controls batch size of download (size of each chunk)

download_folder

Path to desired download folder for all future downloads.

download_example(): Download the example short spectra list in the data directory

download_spectra(download_file)

Download spectra from a file.

Given spectra list containing correctly formatted URLs, download using preferred method given in class initiation

Parameters: download_file (str) – Path to the file containing the valid URLs