python - TypeError: can't escape psycopg2.extensions.Binary to binary -


i try store binary file postgresql through sqlalchemy , file uploaded client. bit google on error message brings me this source file:" wrapped object not bytes or buffer, error" 

   binaries = []     f in request.files.values():         if f , allowed_file(f.filename):             fn = secure_filename(f.filename)             file_path = os.path.join(basedir, fn)             f.save(file_path)             #data = f.read()             data = open(fn, 'rb').read()             binaries.append(psycopg2.binary(data))             f.close()     #does escaping     mytable=mytable(     ...,     document1 = binaries[0]     ...     )     #model     class mytable(mydb.model):       document1 = mydb.column(mydb.largebinary())


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