st = 'https://blog.naver.com/he12569'
st = st.replace("https://blog.naver.com/","")
print(st)
ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ
> 'he12569'
Process finished with exit code 0
REF :
https://god-gil.tistory.com/32
https://www.delftstack.com/ko/howto/python/remove-certain-characters-from-string-python/