import re
 
def clean_text(text):
    text = str(text).lower()
    text = re.sub(r'#(\w+)', r'<\1>', text)
    text = re.sub(r'\n', ' ', text) # Remove /n
    text = re.sub(r'@[A-Za-z0-9]+', '<user>', text) # Remove and replace @mention
    text = re.sub(r'RT\s+', '', text) # Remove RT
    text = re.sub(r'https?://\S+\b/?', '<url>', text) # Remove and replace links
    return text
 
print(clean_text("@Marcorossi hanno ragione I #novax htt"+"p://www.asfag.com/"))

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