18 def page_mask(level=1):  argument
20     if level == 1:
23     elif level == 2:
26     elif level == 3:
46 def entry_va(level, phys_addr, translating_va):  argument
47         def start_bit(level):  argument
48             if level == 5:
50             elif level == 4:
52             elif level == 3:
54             elif level == 2:
56             elif level == 1:
61         entry_offset =  ((translating_va >> start_bit(level)) & 511) * 8
89     def __init__(self, address, level):  argument
94         if level == 1:
105             self.page_physical_address = data & PHYSICAL_ADDRESS_MASK & page_mask(level)
127 …self.page_physical_address = data & PHYSICAL_ADDRESS_MASK & page_mask(level) if page_size_bit else…
134         self.page_hierarchy_level = level
154             def page_size_line(ps_bit, ps, level):  argument
155                 return "" if level == 1 else f"{'bit': <3} {ps_bit: <5} {'page size': <30} {ps}"