一、定义

1. 文件加密

二、实现

2. 文件加密

import sys
import hashlibdef calculate_md5(fpath: str, chunk_size: int = 1024 * 1024) -> str:""" Calculates the MD5 checksum of a file located at the path specified by the fpath.Parameters----------fpath : strFile path.chunk_size : intSpecifies the size of the chunks of the file that are read.Returns-------strReturns MD5 checksum of a file located at the fpath."""if sys.version_info >= (3, 9):md5 = hashlib.md5(usedforsecurity=False)else:md5 = hashlib.md5()with open(fpath, "rb") as f:for chunk in iter(lambda: f.read(chunk_size), b""):md5.update(chunk)return md5.hexdigest()if __name__ == '__main__':res=calculate_md5(fpath="D:/cnki_1/neurai_project\dataset_load\CJDFTRIPLET/raw11/cjdf500k_9.csv")print(res)