python标准库之zipfile

python标准库zipfile

什么是zip文件?为何在网络上zip打包的文件比较常见？而不是rar?

zip是一种压缩归档的文件，zip开源的。

python的zipfile模块，有两个主要的类

ZipFile()

函数，判断是否为zip类型文件

zipfile. is_zipfile ( filename )

Returns True if filename is a valid ZIP file based on its magic number,otherwise returns False. filename may be a file or file-like object too

直接从压缩文件中读取文件内容

ZipFile. read ( name [, pwd ] )

# 实际上调用了self.open().read()

Return the bytes of the file name in the archive. name is the name of thefile in the archive

ZipFile. open ( name [, mode [, pwd ] ] )

Extract a member from the archive as a file-like object (ZipExtFile)

ZipFile. close ( )

Close the archive file. You must call close() before exiting your programor essential records will not be written.

ZipInfo()

# 压缩到指定文件
def file_zip(src, dst):
    zip_obj = ZipFile(dst, mode='w')
    zip_obj.write(src)
    zip_obj.close()


 # 解压缩
def unzip(src):
    zip_obj = ZipFile(src, mode='r')
    for info in zip_obj.filelist:
        zip_obj.extract(member=info)
    zip_obj.close()

zipfile的命令行接口

Usage:
    zipfile.py -l zipfile.zip        # Show listing of a zipfile
    zipfile.py -t zipfile.zip        # Test if a zipfile is valid
    zipfile.py -e zipfile.zip target # Extract zipfile into target dir
    zipfile.py -c zipfile.zip src ... # Create zipfile from sources

-c Create

-e Extract(提取)

-l List