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.

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

The task is to implement a function `strlen` that returns the length of a given string. This is a straightforward task - I need to return the length of the string.

In Python, I can use the built-in `len()` function to get the length of a string.

Let me write the solution:

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

This should work correctly for all test cases:
- `strlen('')` returns 0 (empty string has length 0)
- `strlen('abc')` returns 3 (three characters)

The function signature is already provided, I just need to implement the body.