How to use the js2py.eval_js function in Js2Py

def jschl(tag, domain='www.doutula.com'):
    snippet, obj = '', None
    for line in tag.splitlines():
        if 's,t,o,p,b,r,e,a,k,i,n,g' in line and ' ' in line:
            define = line.rsplit(' ', maxsplit=1)[-1]
            if '=' in define and define.endswith(';'):
                obj = define.split('=')[0]
                snippet += define
        if 'submit()' in line:
            break
        if obj:
            for seg in line.split(';'):
                if seg.startswith(obj) and '=' in seg:
                    snippet += seg + ';'
    return js2py.eval_js(snippet) + len(domain)

async def eval(self, ctx):
        args = ctx.message.content
        args = args.split(' ')
        if ctx.message.author.id not in ownerids:
            await ctx.send(":x: You do not have permission to evaluate code.")
            return
        try:
            if args[1] != "":
                if args[1] == "py":
                    code = ctx.message.content.replace(args[0]+" "+args[1]+" ", "")
                    code = code.strip('` ')
                elif args[1] == "js":
                    code = ctx.message.content.replace(args[0]+" "+args[1]+" "+args[2]+" ", "")
                    javascript = 'Excecuted successfully and returned: {}'
                    try:
                        result = js2py.eval_js(str(code))
                        if result is None:
                            a = "Executed successfully with no objects returned."
                        else:
                            a = javascript.format(result)
                        await ctx.send(embed=discord.Embed(description=a,color=0x00ff00).set_author(name="Evaluated with success", icon_url=ctx.message.author.avatar_url.replace("?size=1024", "")).set_footer(text="Executed by: "+str(ctx.message.author)).set_thumbnail(url='http://www.iconsdb.com/icons/preview/green/checked-checkbox-xxl.png').add_field(name="Code",value="[See here.]({})".format(hastebin.post(code))))
                        return
                    except Exception as e:
                        await ctx.send(embed=discord.Embed(description="Excecuted and errored: {}".format(type(e).__name__ + ': ' + str(e)),color=0xff0000).set_author(name="Evaluated and errored", icon_url=ctx.message.author.avatar_url.replace("?size=1024", "")).set_footer(text="Executed by: "+str(ctx.message.author)).set_thumbnail(url='https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Red_x.svg/480px-Red_x.svg.png').add_field(name="Code",value="[See here.]({}.js)".format(hastebin.post(code))))
                        return
                else:
                    code = ctx.message.content.replace(args[0]+" ", "")
                    code = code.strip('` ')
                python = 'Excecuted successfully and returned: {}'
                result = None
        
                env = {

def get_fp_sign(fp_raw):
    rsp = requests.get(
        'https://login.xunlei.com/risk?cmd=algorithm&t=' +
        str(time.time() * 1000)
    )
    sign = ''
    try:
        xl_al = js2py.eval_js(rsp.content)
        sign = xl_al(fp_raw)
    except Exception as e:
        print(e)

    return sign

js = self.extract_js(body)

        except Exception:
            # Something is wrong with the page.
            # This may indicate Cloudflare has changed their anti-bot
            # technique. If you see this and are running the latest version,
            # please open a GitHub issue so I can update the code accordingly.
            logging.error("[!] Unable to parse Cloudflare anti-bots page. "
                          "Try upgrading cloudflare-scrape, or submit a bug report "
                          "if you are running the latest version. Please read "
                          "https://github.com/Anorov/cloudflare-scrape#updates "
                          "before submitting a bug report.")
            raise

        # Safely evaluate the Javascript expression
        params["jschl_answer"] = str(int(js2py.eval_js(js)) + len(domain))

        # Requests transforms any request into a GET after a redirect,
        # so the redirect has to be handled manually here to allow for
        # performing other types of requests even as the first request.
        method = resp.request.method
        cloudflare_kwargs["allow_redirects"] = False
        redirect = self.request(method, submit_url, **cloudflare_kwargs)
        return self.request(method, redirect.headers["Location"], **original_kwargs)

def play_video(self, selection):
        url = urlparse.urljoin(self.arconaitv_url, selection)
        url = requests.get(urlparse.urljoin(url, selection), headers=self.headers).content
        url = re.compile("var _(.+?)", re.DOTALL).findall(str(url))[0].strip()
        url = url.replace("eval(", "var a =")
        url = "var _" + url[:-1]
        url = url.replace("decodeURIComponent(escape(r))", "r.slice(305,407)")
        url = js2py.eval_js(url).replace("'", "")
        play_item = xbmcgui.ListItem(path=url + '|User-Agent=%s' % client.agent())
        xbmcplugin.setResolvedUrl(addon_handle, True, listitem=play_item)

js = self.extract_js(body)

        except Exception:
            # Something is wrong with the page.
            # This may indicate Cloudflare has changed their anti-bot
            # technique. If you see this and are running the latest version,
            # please open a GitHub issue so I can update the code accordingly.
            logging.error("[!] Unable to parse Cloudflare anti-bots page. "
                          "Try upgrading cloudflare-scrape, or submit a bug report "
                          "if you are running the latest version. Please read "
                          "https://github.com/Anorov/cloudflare-scrape#updates "
                          "before submitting a bug report.")
            raise

        # Safely evaluate the Javascript expression
        params["jschl_answer"] = str(int(js2py.eval_js(js)) + len(domain))

        # Requests transforms any request into a GET after a redirect,
        # so the redirect has to be handled manually here to allow for
        # performing other types of requests even as the first request.
        method = resp.request.method
        cloudflare_kwargs["allow_redirects"] = False
        redirect = self.request(method, submit_url, **cloudflare_kwargs)
        return self.request(method, redirect.headers["Location"], **original_kwargs)

def getBattleFormatsData():
	js=urllib2.urlopen("https://raw.githubusercontent.com/Zarel/Pokemon-Showdown/master/data/formats-data.js").read()
	return json.loads(js2py.eval_js('exports={},'+js+'JSON.stringify(exports.BattleFormatsData)'))

destination_filename (Optional[str]): if specified, the JSON string
            will be written to this file

    Returns:
        str : the JSON string representation of the requested data

    """
    url_prefix = \
        "https://raw.githubusercontent.com/Zarel/Pokemon-Showdown/master/"
    if not url.startswith('https'):
        url = url_prefix + url
    prerun = 'exports={}; '
    postrun = 'JSON.stringify(exports.'+entry+', null, 2)'
    javascript = urlopen(url).read().decode('utf-8')

    json_string = js2py.eval_js(prerun+javascript+postrun)

    if destination_filename:
        _write(json_string, destination_filename)

    return json_string