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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def notblocked(page):
 """Determine if given url is a page that should be in sitemap."""

    for blocked in PAGES_TO_BLOCK:
        if blocked[0] != '*':
            blocked = '*' + blocked
        rx = re.compile(blocked.replace('*', '[^$]*'))
        if rx.match(page):
            return False
    return True