> ## Documentation Index
> Fetch the complete documentation index at: https://systematica.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Parsing

> systematica.utils.parsing

## `get_function_as_str`

```python theme={null}
get_function_as_str(
    func_or_method: Callable,
) ‑> str
```

Extract the body of a function or method's source code, excluding its name,
docstrings, and comments.

**Parameters**:

| Name             | Type          | Default | Description                                              |
| ---------------- | ------------- | ------- | -------------------------------------------------------- |
| `func_or_method` | `tp.Callable` | `--`    | The function from which to extract the source code body. |

**Returns**:

| Type  | Description                                                                                                                                                                     |
| ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `str` | The source code of the function body, with function name, docstrings, and comments removed. Each line is stripped of leading/trailing whitespace, and empty lines are excluded. |

**Raises**:

| Type          | Description                                                                            |
| ------------- | -------------------------------------------------------------------------------------- |
| `OSError`     | If the source code of the function cannot be retrieved (e.g., for built-in functions). |
| `SyntaxError` | If the function's source code cannot be parsed into an AST.                            |

**Examples**:

python

```
>>> def example_function(x):
...     '''This is a docstring.'''
...     y = x + 1  # Add 1 to x
...     print(y)   # Print the result
...     return y   # Return the result
...
>>> print(get_function_body(example_function))
y = x + 1
print(y)
return y
```