python3实现指定目录下文件sha256及文件大小统计

有时会统计某个目录下有哪些文件，每个文件的sha256及文件大小等相关信息，这里用python3写了个脚本用来实现此功能，此脚本可跨平台，同时支持windows和linux，脚本(get_dir_file_info.py)内容如下：

import os
import sys
import hashlib

def Usage():
''' usage description '''
num = len(sys.argv)
if num != 3:
print("Error: please input two parameters")
print("for example: {} path_name save_file_name".format(sys.argv[0]))
sys.exit(1)

def GetFilesList():
''' get file list '''
input_path_name = sys.argv[1]
result = list()

for dirpath, dirnames, filenames in os.walk(input_path_name, followlinks=True):
for filename in filenames:
 file_path = os.path.join(dirpath, filename)
 result.append(file_path)

result.sort()
return result

def CalcFileSha256(filname):
''' calculate file sha256 '''
with open(filname, "rb") as f:
sha256obj = hashlib.sha256()
sha256obj.update(f.read())
hash_value = sha256obj.hexdigest()
return hash_value

def CalcFileSize(filename):
''' calculate file size '''
return os.stat(filename).st_size

def GetFileContent():
''' get file contnet '''
files_list = GetFilesList()
result = list()

for f in files_list:
hash = CalcFileSha256(f)
size = CalcFileSize(f)
file_name = os.path.basename(os.path.realpath(f))
path_name = os.path.dirname(os.path.realpath(f))
dictionary = {"path": path_name, "filename": file_name, "sha256": hash, "size": size}
#print("result: {}".format(dictionary))
result.append(dictionary)
return result

def WriteToFile(contents):
''' write content to the specified file '''
fp = open(sys.argv[2], "w")

for content in contents:
#print("content:", content)
str0 = str(content)
str1 = str0.replace("\\\\", "/")
fp.write(str1)
fp.write("\n")
fp.close()

def ReplaceStr(src_str, new_str):
''' replace source string with new string '''
contents = list()

fp = open(sys.argv[2], "r")
line = fp.readline()
while line:
contents.append(line)
line = fp.readline()
fp.close()

fp = open(sys.argv[2], "w")
for content in contents:
str0 = content.replace(src_str, new_str)
fp.write(str0)
fp.close()

def main():
Usage()
WriteToFile(GetFileContent())
ReplaceStr(" ", "")
ReplaceStr("'", "\"")

if __name__ == "__main__":
main()

执行操作如下：

执行结果及生成的prj_file_list.txt内容如下：

GitHub：Python_Test

来源：https://blog.csdn.net/fengbingchun/article/details/86665247