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| -rw-r--r-- | fg21sim/utils/hashutil.py | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/fg21sim/utils/hashutil.py b/fg21sim/utils/hashutil.py new file mode 100644 index 0000000..394ef04 --- /dev/null +++ b/fg21sim/utils/hashutil.py @@ -0,0 +1,40 @@ +# Copyright (c) 2016 Weitian LI <liweitianux@live.com> +# MIT license + +""" +Hash utilities. + +md5 : + Calculate the MD5 checksum of the file. +""" + +import hashlib + + +def md5(filepath, blocksize=65536): + """ + Calculate the MD5 checksum/digest of the file data. + + Parameters + ---------- + filepath : str + The path to the file + blocksize : int, optional + The block size (bytes) of chunks when read the file. + + Returns + ------- + digest : str + The checksum/digest of the file data, containing only hexadecimal + digits. + + Credits + ------- + - Stackoverflow: Generating an MD5 checksum of a file + https://stackoverflow.com/a/3431838/4856091 + """ + hasher = hashlib.md5() + with open(filepath, "rb") as f: + for chunk in iter(lambda: f.read(blocksize), b""): + hasher.update(chunk) + return hasher.hexdigest() |