@ngel

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 when first accessed and can be reset to generate a new one.
10 """
11
12 # Class-level set to keep track of all names that have been assigned
13 _used_names = set()
14
215 def __init__(self):
3 pass
4
16 """
17 Initialize a Robot instance with no name.
18 The name will be generated when first accessed.
19 """
20 self._name = None
21
522 @property
623 def name(self) -> str:
7 pass
8
24 """
25 Get the robot's name. If the robot doesn't have a name yet,
26 generate a new unique random name.
27
28 Returns:
29 str: The robot's name in format of two uppercase letters followed by three digits.
30 """
31 # Edge Case: Robot has no name yet
32 if self._name is None:
33 self._generate_unique_name()
34 return self._name
35
936 def reset(self) -> None:
10 pass
37 """
38 Reset the robot to its factory settings, wiping its name.
39 The next time the name is accessed, a new unique random name will be generated.
40 """
41 # Edge Case: Robot has no name to reset
42 if self._name is not None:
43 # Remove the current name from the used names set
44 Robot._used_names.discard(self._name)
45 self._name = None
46
47 def _generate_unique_name(self) -> None:
48 """
49 Generate a unique random name for the robot.
50 The name consists of two uppercase letters followed by three digits.
51 """
52 # Edge Case: All possible names are already used (theoretical limit)
53 max_attempts = 1000 # Prevent infinite loop in case of high collision rate
54 attempts = 0
55
56 while attempts < max_attempts:
57 # Generate two random uppercase letters
58 letters = ''.join(random.choices(string.ascii_uppercase, k=2))
59 # Generate three random digits
60 digits = ''.join(random.choices(string.digits, k=3))
61 # Combine to form the name
62 new_name = letters + digits
63
64 # Check if this name is already used
65 if new_name not in Robot._used_names:
66 # Name is unique, assign it to this robot
67 Robot._used_names.add(new_name)
68 self._name = new_name
69 return
70
71 attempts += 1
72
73 # This should theoretically never happen given the large number of possible names (26*26*10*10*10 = 676,000)
74 raise RuntimeError("Unable to generate a unique name after maximum attempts")
75
76 # Handled Edge Cases: Robot has no name yet, Robot has no name to reset, All possible names are already used
Test NameStatus
test_reset_name
Fail
test_different_robots_have_different_names
Pass
test_has_name
Pass
test_name_sticks
Pass

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