"""History management."""
class History:
"""Basic browsing history manager."""
def __init__(self):
self.urls = []
def has_links(self):
"""Return True if there is at least one URL in the history."""
return bool(self.urls)
def push(self, url):
"""Add an URL to the history."""
if not self.urls or self.urls[-1] != url:
self.urls.append(url)
def pop(self):
"""Return latest URL added to history and remove it."""
return self.urls.pop()
