<p>奇怪的编码是base64</p>
<pre><code>>>> import base64
>>> base64.decodestring('RndkOiBDYXBzaGFyZTogaW1wb3J0aW5nIGZyb20gUGhvdG9z?').decode('utf8')
u'Fwd: Capshare: importing from Photos'
>>> base64.decodestring('''U2VudCBmcm9tIG15IEhUQwoKLS0tLS0gRm9yd2FyZGVkIG1lc3NhZ2UgLS0tLS0KRnJvbTogIkFs
... ZXhhbmRlciBBdnRhbnNraSIgPGFsZXhAYXZ0YW5za2kuY29tPgpUbzogIlBlam1hbiBNYWtoZmki
... IDxwakBtYWtoZmkuY29tPgpTdWJqZWN0OiBDYXBzaGFyZTogaW1wb3J0aW5nIGZyb20gUGhvdG9z
... CkRhdGU6IFdlZCwgU2VwIDEwLCAyMDE0IDk6MDYgUE0KCkhpIFBlam1hbiwKCkkgd2FzIHBsYXlp
... bmcgd2l0aCBDYXBzaGFyZSB0b2RheSBhbmQgZm91bmQgc29tZXRoaW5nIG1pc3NpbmcuIEkgZ3Vl
... c3MgeW91CmhhdmUgcGxhbnMgZm9yIGl0LCBidXQgaXQgZG9lc24ndCBodXJ0IHRvIG1lbnRpb24g
... aXQsIGp1c3Qgb24gY2FzZS4uLgoKV2hlbiBpbXBvcnRpbmcgcGhvdG9zLCBJIGhhdmUgdGhlIG9w
... dGlvbiB0byBlaXRoZXIgZ2V0IG9uZSBvZiB0aGUgaW1hZ2VzCnRoYXQgYXJlIGRvd25sb2FkZWQg
... b24gbXkgcGhvbmUsIG9yIHRvIHRha2UgYSBuZXcgcGljdHVyZS92aWRlby4gV2hhdCdzCm1pc3Np
... bmcgaXMgYWJpbGl0eSB0byBnZXQgcGhvdG9zIGZyb20gbXkgYWxidW1zIG9yIGJhY2tlZC11cCBw
... aG90b3MgdGhhdAphcmUgbm90IHBoeXNpY2FsbHkgc3RvcmVkIG9uIHRoZSBkZXZpY2UgLSBmb3Ig
... ZXhhbXBsZSB0aG9zZSBvbiBHb29nbGUKZHJpdmUuIE1vcbmQgYWxsCnBpY3R1cmVzIGFyZSBlcXVh
... bGx5IGFjY2Vzc2libGUgKG9yIG1heWJlIHRoaXMgYXBwbGllcyBvbmx5IHRvIEdvb2dsZQphcHBz
... PykuCgpOb3QgaW1wb3J0YW50LCBubyBpZGVhIGlmIGl0IGlzIGp1c3QgYSBsaW5lIG9yIHR3byBm
... aXggb3Igc29tZXRoaW5nIG1vcmUKY29tcGxpY2F0ZWQuCgpUYWtlIGNhcmUsCgotIEFsZXgsIGJl
... dGEgdGVzdGVyLCBRQSB2b2x1bnRlZXIsIGFuZCBzZW5pb3IgcGVza3kgc3RpY2tsZXI=''').decode('utf8')
u'Sent from my HTC\n\n - Forwarded message -\n....
</code></pre>