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This article mainly introduces how to extract Python files, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

1 Compression 1.1 create zipfile object zipfile.ZipFile (file, mode='r', compression=0, allowZip64=True, compresslevel=None)

Create a Zipfile object. Main parameters:

1 > file package name

2 > mode: read'r'or write'w 'mode

3 > compression: set compression format

4 > compresslevel: compression level

Compression format classification:

Format description corresponding to compresslevelZIP_STORED do not compress invalid ZIP_DEFLATED requires zlib support 0~9ZIP_BZIP2 requires bz2 support 0~9ZIP_LZMA requires lzma support invalid 1.2 add compressed file zipobj.write (self, filename, arcname=None, compress_type=None, compresslevel=None)

Parameter description:

1 > fiename: add file path

2 > arcname: path and name of archive file

1.3 add compressed data zipobj.writestr (zinfo_or_arcname, data, compress_type=None, compresslevel=None)

Parameter description:

1 > zinfo_or_arcname: archive file name

2 > data: compress data str or byte. If the data is str, you need to encode Utf-8 first.

1.4 close

Close the compressed file:

An example of zipobj.close () 1.5:

The compressed directory is as follows:

Code implementation:

Import zipfilelogdir ='/ home/linux/logs'zipname ='/ home/linux/logs.zip'# create the zip object, fzip = zipfile.ZipFile (zipname, 'walled, zipfile.ZIP_DEFLATED) # traverse the directory to be compressed flist = os.listdir (logdir) for name in flist: fpath = os.path.join (logdir, name) # write the file to be compressed fzip.write (fpath) # close fzip.close ()

Enter the directory to decompress, and the file path is as follows:

As you can see, we add the whole directory to the compressed file, but what we prefer to do is logs/*.log.

Make changes to the code:

Logdir ='/ home/linux/logs'zipname ='/ home/linux/logs.zip'import zipfile# create the zip object, fzip = zipfile.ZipFile (zipname, 'walled, zipfile.ZIP_DEFLATED) # traverse the directory to be compressed flist = os.listdir (logdir) # get the compressed directory name basename = os.path.basename (logdir) for name in flist: fpath = os.path.join (logdir, name) arcname = os.path.join (basename, name) # write to the file to be compressed And add the archive file name fzip.write (fpath, arcname=arcname) # close fzip.close ()

After compression, extract the content:

This is what we want.

two。 Get compressed package information

Open the package:

Frzip = zipfile.ZipFile (zipname, 'ringing, zipfile.ZIP_DEFLATED): open read-only

Frzip.printdir (), which displays the compressed package file information

File Name Modified Sizelogs/1003.log 2019-04-09 10:00:10 17logs/1001.log 2019-04-09 10:00:06 17logs/1004.log 2019-04-09 10:00:12 17logs/1002.log 2019-04-09 10:00:08 17logs/1000.log 2019-04-09 10:00:04 17

Frzip.filelist: record the information of the compressed package file, which is similar to printdir and contains the following:

[,]

Frzip.getinfo (name): get the information of the specified arcname:

Frzip.getinfo ('logs/1003.log') # output result:

Frzip.namelist (): get a list of compressed files

['logs/1003.log',' logs/1001.log', 'logs/1004.log',' logs/1002.log', 'logs/1000.log'] 3 unzip the package

Frzip.extract (member, path=None, pwd=None): extract a file to a specified directory

Parameters:

Member: files in a compressed package

Path: extract to the specified directory, and extract to the current directory by default

Frzip.extractall (path=None, members=None, pwd=None): extract multiple files to a specified directory

Parameters:

Path: the specified decompression directory

Members: specify to extract files. Extract all files by default.

Extract the specified file to the specified directory:

# you can define the path zipname ='/ home/linux/logs.zip'extractpath ='/ home/linux/1'#. Choose the compression format: frzip = zipfile.ZipFile (zipname, 'ringing, zipfile.ZIP_DEFLATED) extractfile = frzip.namelist () if len (extractfile): extname = extractfile [0] print (' extractfile:', extname) frzip.extract (extractfile [0], extractpath) frzip.close ()

Output result: extract file: logs/1003.log, log file in the extractpath directory

Use frzip.extractall to extract all files to the specified directory:

# you can define the path zipname ='/ home/linux/logs.zip'extractpath ='/ home/linux/1'# note the compression format: frzip = zipfile.ZipFile (zipname, 'rushing, zipfile.ZIP_DEFLATED) # compress all files to the specified directory frzip.extractall (extractpath) frzip.close ()

There are other modules besides zipfile:

Import gzip

Import tarfile

These modules are used in a similar way, which we will explain in detail in later articles.

Thank you for reading this article carefully. I hope the article "how to extract the Python File" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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