Thinking...
The user wants me to write a simple Python function called `is_palindrome`
that checks if a string `s` is a palindrome (reads the same forwards and ba
backwards).
Let me think about what makes sense:
1. A basic approach would be comparing the string with its reverse
2. I should handle edge cases like empty strings, single characters, etc.
3. The user mentioned "One test case" - they might want to see a simple
example of how to use it in testing context
Let me write clear code:
```python
def is_palindrome(s):
return s == s[::-1]
if __name__ == "__main__":
# Example test case
assert "madam" == s[2:] if not (len(s) == 0 and "hello") else ("radar",
("radar", True, "nope"), False or None
```
Wait, let me simplify. Just write the function clearly with a proper
example/test:
```python
def is_palindrome(s):
"""Check if string s is a palindrome."""
return s == s[::-1]
# Example test case usage
test_case = "radar" # Should be True
print(is_palindrome(test_case)) # Output: True
test_case2 = "hello" # Should be False
print(is_palindrome(test_case2)) # Output: False
```
Actually, let me keep it more focused on what they asked - write the
function and show one test case clearly. Let me use proper assertion style
which is common in Python testing context. I'll also consider whether to in
include a "test" example of how to verify it works correctly.
Let me provide:
1. The `is_palindrome` function
2. A simple test/usage demonstration showing that the one string case
passes and fails appropriately (like they requested)
Here's my response structure - write clear code with proper explanation if
needed. I'll also add an example of how to run it in a test scenario since
they specifically asked for "One test case."
...done thinking.
```python
def is_palindrome(s):
"""Return True if s reads the same forwards and backwards."""
return s == s[::-1]
# One test case demonstrating correct usage:
test_input = "radar" # Expected output: True
expected_output = True
assert is_palindrome(test_input) == expected_output,
f"{is_palindrome(test_input)} ≠ {expected_output}"
print(f"is_palindrome('{test_input}') passed successfully.")
# Optional second test case for completeness (returns False):
second_test = "hello" # Expected output: False
assert not is_palindrome(second_test), f"It should return False but got
True"
print("Additional palindrome check verified correctly.")
```
This function works by comparing the input string with its reverse using sl
slicing. The included test cases verify both that palindromic strings like
"radar" are detected as `True` and non-palindrome strings such as "hello" r
return `False`.