这个爬虫代码无法除去大块的空白

问题遇到的现象和发生背景

用代码块功能插入代码，请勿粘

import  requests
from lxml import etree
url="http://bbs.e763.com"
data=requests.get(url).content.decode("gbk")
data=etree.HTML(data)
dat=data.xpath('//text()')
dat=''.join(dat).replace('/n','').replace('/r','').replace('/t','').replace(' ','')
for ddd in range(len(dat)):
    if(ddd is None):
        pass
    else:
        aa=dat

        print(aa)

运行结果及报错内容

是 \n 不是/n

import  requests
from lxml import etree
url="http://bbs.e763.com"
data=requests.get(url).content.decode("gbk")
data=etree.HTML(data)
dat=data.xpath('//text()')
dat=''.join(dat).replace('\n','').replace('\r','').replace('\t','').replace(' ','')
for ddd in range(len(dat)):
    if(ddd is None):
        pass
    else:
        aa=dat
        print(aa)

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