如何在Python 3中解压缩由gzip压缩并转换为base 64的文本字符串?
例如,文本:
EgAAAB + LCAAAAAAABAALycgsVgCi4vzcVAWFktSKEgC9n1 / fEgAAAA ==
应转换为:
这是一些文字
以下C#
代码成功做到了:
var gzBuffer = Convert.FromBase64String(compressedText);
using (var ms = new MemoryStream()) {
int msgLength = BitConverter.ToInt32(gzBuffer, 0);
ms.Write(gzBuffer, 4, gzBuffer.Length - 4);
var buffer = new byte[msgLength];
ms.Position = 0;
using (var zip = new GZipStream(ms, CompressionMode.Decompress)) {
zip.Read(buffer, 0, buffer.Length);
}
return Encoding.UTF8.GetString(buffer);
}
答案 0 :(得分:2)
您可以使用gzip
和base64
模块。
>>> import gzip
>>> import base64
>>> s = 'EgAAAB+LCAAAAAAABAALycgsVgCi4vzcVAWFktSKEgC9n1/fEgAAAA=='
>>> gz = base64.b64decode(s)
>>> gz
b'\x12\x00\x00\x00\x1f\x8b\x08\x00\x00\x00\x00\x00\x04\x00\x0b\xc9\xc8,V\x00\xa2\xe2\xfc\xdcT\x05\x85\x92\xd4\x8a\x12\x00\xbd\x9f_\xdf\x12\x00\x00\x00'
# If you need the length
import struct
# Unpacks binary encoded 4 byte integer (assume native byte order)
# Only select first four bytes with [:4] slice
>>> struct.unpack('i', gz[:4])[0]
18
# Skip length value with [4:] slice
>>> gzip.decompress(gz[4:]).decode('UTF8')
'This is some text'