Element Access and Updates

Element Access and Updates

Values can be accessed using the `.`(dot) operator. You can access the value of key `name` in defined object `Example(name="John Doe", job="sleep")` through `object.name`. 

To access or exclude certain keys, use `inputs()` and `labels()` methods to return new Example objects containing only input or non-input keys, respectively.

```python
article_summary = dspy.Example(article= "This is an article.", summary= "This is a summary.").with_inputs("article")

input_key_only = article_summary.inputs()
non_input_key_only = article_summary.labels()

print("Example object with Input fields only:", input_key_only)
print("Example object with Non-Input fields only:", non_input_key_only)
```

**Output**
```
Example object with Input fields only: Example({'article': 'This is an article.'}) (input_keys=None)
Example object with Non-Input fields only: Example({'summary': 'This is a summary.'}) (input_keys=None)
```

To exclude keys, use `without()`:

```python
article_summary = dspy.Example(context="This is an article.", question="This is a question?", answer="This is an answer.", rationale= "This is a rationale.").with_inputs("context", "question")

print("Example object without answer & rationale keys:", article_summary.without("answer", "rationale"))
```

**Output**
```
Example object without answer & rationale keys: Example({'context': 'This is an article.', 'question': 'This is a question?'}) (input_keys=None)
```

Updating values is simply assigning a new value using the `.` operator.

```python
article_summary.context = "new context"
```