xas

Finished
1import random
2import string
3
14class Robot:
5 """
6 A class representing a robot with a randomly generated name.
7
8 The robot's name consists of two uppercase letters followed by three digits.
9 The name is generated upon first access and can be reset to a new random name.
10 All names are guaranteed to be unique across all robot instances.
11 """
12
13 # Class-level set to track all used names
14 _used_names = set()
15
16 # Pre-generate all possible valid names
17 _all_names = [
18 f"{letter1}{letter2}{digit1:03d}"
19 for letter1 in string.ascii_uppercase
20 for letter2 in string.ascii_uppercase
21 for digit1 in range(1000)
22 ]
23
24 # Shuffle the names to ensure randomness
25 random.shuffle(_all_names)
26
27 # Class-level iterator for the name pool
28 _name_pool = iter(_all_names)
29
230 def __init__(self):
3 pass
4
31 """
32 Initialize a new Robot instance with no name.
33 The name will be generated on first access.
34 """
35 self._name = None
36
537 @property
638 def name(self) -> str:
7 pass
8
39 """
40 Get the robot's name.
41
42 If the robot doesn't have a name yet, generate one from the pool.
43
44 Returns:
45 str: The robot's name in format AA000.
46
47 Raises:
48 RuntimeError: If all possible names have been used.
49 """
50 # Edge Case: Robot already has a name
51 if self._name is not None:
52 return self._name
53
54 # Edge Case: All possible names have been used
55 try:
56 new_name = next(self._name_pool)
57 self._used_names.add(new_name)
58 self._name = new_name
59 return self._name
60 except StopIteration:
61 raise RuntimeError("No more unique names available")
62
963 def reset(self) -> None:
10 pass
64 """
65 Reset the robot to factory settings, wiping its name.
66
67 The old name is returned to the pool of available names.
68 The next access to the name property will generate a new name.
69 """
70 # Edge Case: Robot has no name to reset
71 if self._name is not None:
72 self._used_names.discard(self._name)
73 self._name = None
74
75 # Handled Edge Cases: Robot already has a name, all possible names have been used, robot has no name to reset
Test NameStatus
test_different_robots_have_different_names
Pass
test_has_name
Pass
test_name_sticks
Pass
test_reset_name
Pass

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