python使用内存zipfile对象在内存中打包文件示例

复制代码 代码如下:
import zipfile
import StringIO

class InMemoryZip(object):
    def __init__(self):
        # Create the in-memory file-like object
        self.in_memory_zip = StringIO.StringIO()

    def append(self, filename_in_zip, file_contents):
        \’\’\’Appends a file with name filename_in_zip and contents of
        file_contents to the in-memory zip.\’\’\’
        # Get a handle to the in-memory zip in append mode
        zf = zipfile.ZipFile(self.in_memory_zip, \”a\”, zipfile.ZIP_DEFLATED, False)

        # Write the file to the in-memory zip
        zf.writestr(filename_in_zip, file_contents)

        # Mark the files as having been created on Windows so that
        # Unix permissions are not inferred as 0000
        for zfile in zf.filelist:
            zfile.create_system = 0       

        return self

    def read(self):
        \’\’\’Returns a string with the contents of the in-memory zip.\’\’\’
        self.in_memory_zip.seek(0)
        return self.in_memory_zip.read()

    def writetofile(self, filename):
        \’\’\’Writes the in-memory zip to a file.\’\’\’
        f = file(filename, \”w\”)
        f.write(self.read())
        f.close()

if __name__ == \”__main__\”:
    # Run a test
    imz = InMemoryZip()
    imz.append(\”test.txt\”, \”Another test\”).append(\”test2.txt\”, \”Still another\”)
    imz.writetofile(\”test.zip\”)