_f = open("c:/go-next.png", "rb")
data = _f.read()
_f.close()
data.encode("utf-8")
# Error: UnicodeDecodeError: file <maya console> line 1: ascii #
As you see I open a image file, and the data is type. But I have to convert it to utf-8. Maybe binary data has some extra char (or not), it conflict with conversion. Is there any way to solve it?
You can always map a str to unicode using the latin-1 codec. Once you have a unicode, you can always encode it in utf-8:
data.decode('latin-1').encode("utf-8")
'42'.decode('latin1').encode('utf-8'). :-)
latin-1 codec maps codepoints "0-255 to the bytes 0x0-0xff": docs.python.org/2/library/codecs.html#encodings-and-unicode So, this does exactly what you'd expect.Text encodings only apply to text. Do not attempt to use them on binary data.
What you're trying to accomplish can probably be achieved by base64 encoding it.
import base64
encoded = base64.b64encode(image_binary_data)
Encoding means converting strings to storable bytes.
And Decoding means converting bytes to readable strings.
The data in your code is already encoded.
Image cannot be converted into something like charters in utf8.
add_filefor the image, andadd_fieldfor text..add_file("my_image", "go-next.png", open("c:/go-next.png", "rb"), "image/png")and for text.add_field("key", "text")utf-8(which is an encoding for text) you need a format in between. For example, using base64:file_data_b64 = b64encode(file_data).decode('utf-8')And then you can get back to the binary format when you save the file to avoid data loss:a_file.write(b64decode(file_data))Decoding with another text encoding , likelatin-1, before encoding toutf-8is dangerous because not every binary file (for example, PNG) would be suitable for text encoding (probablydata.decode('latin-1').encode("utf-8")is NOT what you want)