如何对html_string进行base64编码

Question

AIM

I am attempting to encode a folium choropleth as StringIO . I am basing my answer of a related query . I have checked the answers here and here .

ERROR

AttributeError: 'bytes' object has no attribute 'encode'

CODE

views.py

def get_choropleth(self, request):
    # make choropleth ('m')
    html_string = m.get_root().render()
    f = StringIO(html_string)
    choropleth = base64.b64decode(f.read())
    choropleth = choropleth.encode('utf8') # causing error
    return {'choropleth':choropleth}

Answer 1

After some trial-and-error, the following worked for me:

SOLUTION

def get_choropleth(self, request):
        # make choropleth ('m')
        html_string = m.get_root().render()
        encoded_bytes = html_string.encode('utf-8')
        encoded_bytes = base64.b64encode(encoded_bytes)
        encoded_bytes = encoded_bytes.decode('utf8') # decode the b64 bytes for Unicode
        choropleth = encoded_bytes
        return {'choropleth':choropleth}