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candle.helper_utils.fetch_file

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candle.helper_utils.fetch_file#

candle.helper_utils.fetch_file(link, subdir, unpack=False, md5_hash=None)#

Convert URL to file path and download the file if it is not already present in spedified cache.

Parameters:

  • link (string) – URL of the file to download

  • subdir (string) – Local path to check for cached file.

  • unpack (bool) – Flag to specify if the file to download should be decompressed too. (default: False, no decompression)

  • md5_hash (string) – MD5 hash used as a checksum to verify data integrity. Verification is carried out if a hash is provided. (default: None, no verification)

Returns:

local path to the downloaded, or cached, file.

Return type:

string

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