Code:

file('pinax/media/a.jpg', 'wb')

解決方案

File mode, write and binary. Since you are writing a .jpg file, it looks fine.

But if you supposed to read that jpg file you need to use 'rb'

More info

On Windows, 'b' appended to the mode

opens the file in binary mode, so

there are also modes like 'rb', 'wb',

and 'r+b'. Python on Windows makes a

distinction between text and binary

files; the end-of-line characters in

text files are automatically altered

slightly when data is read or written.

This behind-the-scenes modification to

file data is fine for ASCII text

files, but it’ll corrupt binary data

like that in JPEG or EXE files.

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