Question 1

我想使用"http://www.joachim-bauch.de/projects/pylzma/">PyLZMA 从档案中提取一个文件(例如 test.7z)并将其提取到同一目录。

我是皮顿的一个新人,不知道如何开始。我做了一些谷歌,发现几个例子和

Answer

这是处理基本功能的 Python 类。我用它做我自己的工作:

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()

Answer

这里有两个代码片段, http://www.linuxplanet.org/blogs/?cat=3845" rel="nofollow">http://www.linuxplanet.org/blogs/?cat=3845

# 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()

Question 2

这是处理基本功能的 Python 类。我用它做我自己的工作:

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()

Question 3

这里有两个代码片段, http://www.linuxplanet.org/blogs/?cat=3845" rel="nofollow">http://www.linuxplanet.org/blogs/?cat=3845

# 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()

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