he-023

# HumanEval/23

Implement a file **`solution.py`** that completes the function below. Keep the given name and signature; your file must define it at module level.

```python


def strlen(string: str) -> int:
    """ Return length of given string
    >>> strlen('')
    0
    >>> strlen('abc')
    3
    """
```

<!-- imported from OpenAI HumanEval (HumanEval/23) -->

# Auto-generated from OpenAI HumanEval HumanEval/23. Do not edit by hand.
from solution import *  # noqa: F401,F403 (prompt helpers may be referenced by tests)
from solution import strlen as candidate

METADATA = {
    'author': 'jt',
    'dataset': 'test'
}


def check(candidate):
    assert candidate('') == 0
    assert candidate('x') == 1
    assert candidate('asdasnakj') == 9


def test_he_023():
    check(candidate)

You are an expert programmer. Solve the task exactly as specified. Output your solution as fenced code blocks using the required file name(s) and the exact function/type signatures requested. Prefer correctness; do not include prose outside code unless asked.

To solve this problem, we need to implement a function that returns the length of a given string. This is a straightforward task that can be efficiently accomplished using Python's built-in `len()` function.

### Approach
The approach to solve this problem is simple and efficient:
1. **Understand the Problem**: The task is to determine the length of a given string. The function should return an integer representing this length.
2. **Use Built-in Function**: Python provides a built-in function `len()` that returns the length of a string. This function is both efficient and concise.
3. **Handle Edge Cases**: The function should correctly handle edge cases such as an empty string, which should return 0, and strings with multiple characters, which should return the count of those characters.

### Solution Code
```python
def strlen(string: str) -> int:
    return len(string)
```

### Explanation
- **Function Definition**: The function `strlen` is defined to take a single parameter `string` of type `str`.
- **Return Statement**: The function returns the length of the input string using the `len()` function, which efficiently computes the length.
- **Edge Cases**: The solution handles all cases, including empty strings and strings with multiple characters, correctly and efficiently.

This approach ensures that the solution is both correct and optimal, leveraging Python's built-in capabilities to achieve the desired result with minimal code.

Okay, I need to solve this problem where I have to implement a function called strlen that returns the length of a given string. The function is already defined with the correct signature, so I just need to fill in the body.

Let me think about how to approach this. The function takes a string as input and returns an integer, which is the length of that string. In Python, there's a built-in method for strings called len() that gives the length. So the simplest way is to return len(string).

Wait, but are there any edge cases I should consider? The examples given show that for an empty string, it returns 0, and for 'abc', it returns 3. Those are exactly what len() would do. So I don't think there are any tricky cases here.

So the implementation should be straightforward. The function will just return the length of the input string using the len() function.

Let me write the code. The function is named strlen, takes a string parameter, and returns an integer. So inside the function, I'll just return len(string).

I should also make sure that the function is correctly indented and placed in the solution.py file as per the requirements. Since the function is already defined, I just need to add the return statement.

Testing the examples: when the input is an empty string, len returns 0, which matches the first test case. For 'abc', len returns 3, which matches the second test case. So this should work.

I don't see any other considerations. The solution is simple and efficient.