Access Multiselect Form Field in Flask

Answer 1

You can create a function to get values as dictionary

def __get_form_data(self, method='POST', compare_with=dict()):
    # Get form MiniFieldStorage items
    form = cgi.FieldStorage(fp=self.rfile, headers=self.headers, environ={ 'REQUEST_METHOD' : method })
    # Convert to dictionary
    return { key.rstrip('[]'):form.getlist(key) if key.endswith('[]') else form.getvalue(key) for key in form.keys() if compare_with.get(key)!=form.getvalue(key) }