python 2.7 win7 解压文件

1. 安装rarfile

pip install rarfile

2. 下载 unrar windows 版本文件：

http://www.rarlab.com/rar_add.htm

http://www.rarlab.com/rar/unrarw32.exe

然后执行 unrarw32.exe 解压路径设置为当前工程路径。

3. 在 python 脚本里面测试即可。

                    try :
                        f = rarfile.RarFile(local_file)
                        f.extractall(local_path)
                        f.close()
                    except Exception as e:
                        print 'ERROR: Extract RAR file %s exception：'%local_file, e

但是这样只能使用 rarfile 解压，如果要支持其他格式比如zip或者7z就得用其他工具了。

在 win7 下 python2.7 64位用 pip 安装 zipfile 提示找不到，只能系统调用了，最好的工具是 7zip：

import subprocess cmd = ['7z', 'a', 'Test.7z', 'Test', '-mx9'] sp = subprocess.Popen(cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE)

或者使用 pylzma ：http://www.joachim-bauch.de/projects/pylzma/

easy_install pylzma

使用封装：

import py7zlib class SevenZFile(object): @classmethod def is_7zfile(cls, filepath): ''' Class method: determine if file path points to a valid 7z archive. ''' is7z = False fp = None try: fp = open(filepath, 'rb') archive = py7zlib.Archive7z(fp) n = len(archive.getnames()) is7z = True finally: if fp: fp.close() return is7z def __init__(self, filepath): fp = open(filepath, 'rb') self.archive = py7zlib.Archive7z(fp) def extractall(self, path): for name in self.archive.getnames(): outfilename = os.path.join(path, name) outdir = os.path.dirname(outfilename) if not os.path.exists(outdir): os.makedirs(outdir) outfile = open(outfilename, 'wb') outfile.write(self.archive.getmember(name).read()) outfile.close()

或者：

# Compress the input file (as a stream) to a file (as a stream) i = open(source_file, 'rb') o = open(compressed_file, 'wb') i.seek(0) s = pylzma.compressfile(i) while True: tmp = s.read(1) if not tmp: break o.write(tmp) o.close() i.close() # Decomrpess the file (as a stream) to a file (as a stream) i = open(compressed_file, 'rb') o = open(decompressed_file, 'wb') s = pylzma.decompressobj() while True: tmp = i.read(1) if not tmp: break o.write(s.decompress(tmp)) o.close() i.close()