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• URL encoding the space character: + or %20?
  • %20 in the path before the query string.
  • + in the query string.
  • However, using + everywhere should be good enough.
• Url
  • urllib.quote_plus(string.encode('utf-8'))
  • urllib.unquote_plus(string.encode('utf-8'), safe='/')
    • safe defaults to "/" for urllib.quote but not for urllib.quote_plus.
• Html
  • markupsafe.escape(string) or cgi.escape(string, True)
  • use htmlentitydefs stuff to decode.
• DataUri
  • "data:text/html;base64," + urllib.quote_plus(base64.standard_b64encode(content))
    • Replace "text/html" with the right mime type.