import re

data = [ 
    "<url>http://https://example.com/test_page<url/>",
    "<url>http://https://mywebsite.org/homepage<url/>"
]


def extract_clean_urls(data):
    clean_urls = []
    for text in data:
        match = re.search(r'<url>(http://https://[a-zA-Z0-9./_-]+)<url/>', text)
        if match:
            url = match.group(1)
            clean_url = re.sub(r'[^a-z0-9._/-]', '', url.lower())
            clean_urls.append(clean_url)
    return clean_urls

clean_urls = extract_clean_urls(data)

for url in clean_urls:
    print(url)