Python使用tarfile模块实现免费压缩解压

import tarfile
# (1) 压缩文件
# 1.只是单纯的打包.
# 创建压缩包
tf = tarfile.open("ceshi0930_0.tar","w",encoding="utf-8")
# 写入文件
"""add(路径,别名)"""
tf.add("/bin/chown","chown")
tf.add("/bin/cp","cp")
tf.add("/bin/dash","tmp/dash")
# 关闭文件
tf.close() # 378880
# 2.使用gz算法压缩
tf = tarfile.open("ceshi0930_1.tar.gz","w:gz",encoding="utf-8")
# 写入文件
"""add(路径,别名)"""
tf.add("/bin/chown","chown")
tf.add("/bin/cp","cp")
tf.add("/bin/dash","tmp/dash")
# 关闭文件
tf.close() # 180413
# 3.使用bz2算法压缩
tf = tarfile.open("ceshi0930_2.tar.bz2","w:bz2",encoding="utf-8")
# 写入文件
"""add(路径,别名)"""
tf.add("/bin/chown","chown")
tf.add("/bin/cp","cp")
tf.add("/bin/dash","tmp/dash")
# 关闭文件
tf.close() # 163261

tf = tarfile.open(“ceshi0930_1.tar.gz”,“r”,encoding=“utf-8”)
“”" extract(文件,路径) 解压单个文件"“”
tf.extract(“chown”,“ceshi0930_1”)
“”" extract(路径) 解压所有文件"“”
tf.extractall(“ceshi0930_1_2”)
tf.close()

tf = tarfile.open(“ceshi0930_0.tar”,“a”,encoding=“utf-8”)
tf.add(“/bin/mkdir”,“mkdir”)
tf.close()

with tarfile.open(“ceshi0930_0.tar”,“a”,encoding=“utf-8”) as tf:
tf.add(“/bin/mkdir”,“mkdir234”)

with tarfile.open(“ceshi0930_0.tar”,“r”,encoding=“utf-8”) as tf:
lst = tf.getnames()
print(lst)

import os,shutil
"""
1.把已经压缩的包进行解压
2.把要追加的内容放进去
3.过滤文件重新压缩
"""
# 记录压缩包所在的绝对路径
pathvar1 = os.path.abspath("ceshi0930_2.tar.bz2")
# 要解压到哪个文件夹中(绝对路径)
pathvar2 = os.path.join(  os.getcwd() , "ceshi0930_2"  )
print(pathvar1)# /mnt/hgfs/python32_gx/day16/ceshi0930_2.tar.bz2
print(pathvar2)# /mnt/hgfs/python32_gx/day16/ceshi0930_2
# 1.把已经压缩的包进行解压
with tarfile.open(pathvar1,"r",encoding="utf-8") as tf:
    tf.extractall(pathvar2)
# 2.把要追加的内容放进去
shutil.copy("/bin/echo" , pathvar2)
# 3.过滤文件重新压缩
# 查看文件夹当中有什么文件
lst = os.listdir(pathvar2)
print(lst) # ['chown', 'cp', 'echo', 'tmp']
with tarfile.open(pathvar1,"w:bz2",encoding="utf-8") as tf:
    for i in lst:
        if i != "chown":
            # 拼凑成完整的绝对路径
            abs_path = os.path.join(pathvar2,i)
            # 剩下的都要压缩
            """add(路径,别名)"""
            tf.add(abs_path,i)