circular-dict

import os from circular_dict import CircularDict # Initialize a CircularDict with a maximum length of 3 items my_dict_maxlen = CircularDict(maxlen=3) my_dict_maxlen['key1'] = 'value1' my_dict_maxlen['key2'] = 'value2' my_dict_maxlen['key3'] = 'value3' print(f"Initial maxlen dict: {list(my_dict_maxlen.keys())}") my_dict_maxlen['key4'] = 'value4' # 'key1' is automatically removed print(f"After adding key4 (key1 removed): {list(my_dict_maxlen.keys())}") # Initialize a CircularDict with a maximum memory usage of 4MB # Note: actual memory usage depends on content; this is an example. # For demonstration, we'll use a smaller, illustrative byte size. # Real-world usage requires careful calculation of object sizes. # Using a small maxsize_bytes for demonstration of its behavior. my_dict_maxsize = CircularDict(maxsize_bytes=100) # 100 bytes approx my_dict_maxsize['a'] = '1234567890' # ~10 bytes for value + key overhead my_dict_maxsize['b'] = 'abcdefghij' # ~10 bytes for value + key overhead # Adding more items will cause older ones to be removed to stay under 100 bytes. # This is illustrative; actual byte size calculations are complex. print(f"\nInitial maxsize dict: {list(my_dict_maxsize.keys())}") my_dict_maxsize['c'] = 'klmnopqrst' * 5 # A larger string print(f"After adding larger key 'c': {list(my_dict_maxsize.keys())}") # Depending on exact memory model, 'a' and 'b' might be removed.