Ls command may produce output that can't be interpreted as text. To interpret a byte sequence as a text, you have to know theĬorresponding character encoding: unicode_text = code(character_encoding) Lines.append(code('utf-8', 'slashescape')) #print err, dir(err), err.start, err.end, err.objectĬodecs.register_error('slashescape', slashescape) returnĪ tuple with a replacement for the unencodable part of the inputĪnd a position where encoding should continue""" It should be slower than the cp437 solution, but it should produce identical results on every Python version. UPDATE 20170119: I decided to implement slash escaping decode that works for both Python 2 and Python 3. See Python’s Unicode Support for details. Lines.append(code('utf-8', 'backslashreplace')) That works only for Python 3, so even with this workaround you will still get inconsistent output from different Python versions: PY3K = sys.version_info >= (3, 0) UPDATE 20170116: Thanks to comment by Nearoo - there is also a possibility to slash escape all unknown bytes with backslashreplace error handler. UPDATE 20150604: There are rumors that Python 3 has the surrogateescape error strategy for encoding stuff into binary data without data loss and crashes, but it needs conversion tests, -> ->, to validate both performance and reliability. See the missing points in Codepage Layout - it is where Python chokes with infamous ordinal not in range. The same applies to latin-1, which was popular (the default?) for Python 2. UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 2: invalid Finally, we create an empty image file pic_decoded_back.jpeg and variable final_decoder that will act as a funnel to transfer decoded data into the image file.If you don't know the encoding, then to read binary input into string in Python 3 and Python 2 compatible way, use the ancient MS-DOS CP437 encoding: PY3K = sys.version_info >= (3, 0)īecause encoding is unknown, expect non-English symbols to translate to characters of cp437 (English characters are not translated, because they match in most single byte encodings and UTF-8).ĭecoding arbitrary binary input to UTF-8 is unsafe, because you may get this: > b'\x00\x01\xffsd'.decode('utf-8').We use variable read_64 to read encoded values stored in the decoder variable.We have Base64 values in the coded_str variable.Let’s recall the steps initiated so far to make everything crystal clear. jpeg file where we will be storing our decoded Base64 values.įinally, we decode and write the contents into a new image file. The variable final_decoder is used to create a new writable. Then the contents of the decoder are read by a variable using the syntax, read_b64 = decoder.read(). The file is loaded as a readable entity because we won’t be writing anything in this file anymore. bin file through the syntax decoder = open('pic_encoding.bin', 'rb'). Variable decoder is created that loads the. Decode Base64 Values and Write Into an Image File It should be made sure that the file is in the same directory where the python.txt file is stored, or the system won’t interact with it. txt file can also be used.Īll it needs is to put the file having Base64 values in the syntax, with open('(filename.extension)', "wb") as file:, and the file will be loaded in the program. The above program can be used to recreate the coded_str variable, but a. Here, the variable coded_str is used in the above program. The file.write(coded_str) syntax simply writes those Base64 values into that. bin file, in which we store the Base64 values. The syntax with open('file_name, "wb") as file: creates a writable ( "wb"). bin file is created to store the Base64 values for this step.
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