python读取文件特定内容_利用python代码获取文件特定的内容 并保存为文档

import os.path

import re

# 1 遍历指定目录，显示目录下的所有文件名

def each_file(file_path):

path_dir = os.listdir(file_path)

# 将得到列表内的文件排序（因为自己要读取的文件类型是1.out，2.out,3.out......这样的，所以可以切片排序）

path_dir.sort(key = lambda x: x.split('.'[0]))

for one_dir in path_dir:

print(one_dir)

one_dir_path = os.path.join('%s/%s' % (file_path, one_dir))

if os.path.isfile(one_dir_path):

read_file(one_dir_path)

continue

each_file(one_dir_path)

# 2 匹配出所需的内容,并写入指定文档

def read_file(filename):

fopen = open(filename, 'r')

fwrite = open("sp.txt", 'a')

file_read = fopen.read()

ret = re.findall(r"\\(HF=.+?)\\", file_read)

if not ret:

fwrite.write(filename + "计算结果有误" + "\n")

for sp in ret:

fwrite.write(filename + sp + "\n")

fwrite.close()

fopen.close()

if __name__ == "__main__":

# 清除sp.txt内存在的内容

if os.path.exists('/home/python/Desktop/rw/sp.txt'): # 此路径为存放此段代码的目录

fwrite = open("sp.txt", 'w')

fwrite.truncate()

filenames = input("请输入文件的绝对路径：")

each_file(filenames)