python tar 压缩解压

压缩：

1.

import tarfile
import os
def tar(fname):
    t = tarfile.open(fname + ".tar.gz", "w:gz")
    for root, dir, files in os.walk(fname):
        for file in files:
            fullpath = os.path.join(root, file)
            t.add(fullpath)
    t.close()

if __name__ == "__main__":
    tar("test")

2.

import tarfile

#创建压缩包名
tar = tarfile.open("/tmp/tartest.tar.gz","w:gz")
#创建压缩包
for root,dir,files in os.walk("/tmp/tartest"):
    for file in files:
        fullpath = os.path.join(root,file)
        tar.add(fullpath)
tar.close()

解压：

def extract(tar_path, target_path):
    try:
        tar = tarfile.open(tar_path, "r:gz")
        file_names = tar.getnames()
        for file_name in file_names:
            tar.extract(file_name, target_path)
        tar.close()
    except Exception, e:
        raise Exception, e

如果提示"tarfile.ReadError: not a gzip file"

将"r:gz" 改为"r"

---

其中open的原型是：

tarfile.open(name=None, mode='r', fileobj=None, bufsize=, **kwargs)

mode的值有：

'r' or 'r:*'   Open for reading with transparent compression (recommended).
'r:'   Open for reading exclusively without compression.
'r:gz'   Open for reading with gzip compression.
'r:bz2'   Open for reading with bzip2 compression.
'a' or 'a:'   Open for appending with no compression. The file is created if it does not exist.
'w' or 'w:'   Open for uncompressed writing.
'w:gz'   Open for gzip compressed writing.
'w:bz2'   Open for bzip2 compressed wr