Python实现写入文本全部内容，下次写入时先清空文本再写入，保持最新，有兴趣可以修改我前面抓取IP叠加抓取的毛病。适用于抓取有时效的：每日新闻、实时热点、IP等。

a=[‘niu‘,‘adf‘,‘sdfsdf‘,‘dsfsd‘]
‘‘‘
for i in range(10):
    t=i+1
    a.append(t)
print(a)
‘‘‘
with open (‘1.txt‘,‘w‘) as q:
    t=‘‘
    for e in range(len(a)):
        t = t + a[e]+‘\n‘
    print(t)
    q.write(t)
    #q.write(‘\n‘)


结果--------------------------------

a=[]
for i in range(10):
    t=i+1
    a.append(t)
print(a)

with open (‘1.txt‘,‘w‘) as q:
    t=‘‘
    for e in range(len(a)):
        t = str(t) + str(a[e])+‘\n‘ #数字要改字符串型
    print(t)
    q.write(t)
    #q.write(‘\n‘)

结果------------------------------------