I want to merge two dictionaries into a new dictionary.
```
x = {'a': 1, 'b': 2}
y = {'b': 3, 'c': 4}
z = merge(x, y)

&gt;&gt;&gt; z
{'a': 1, 'b': 3, 'c': 4}
```
Here's how you can merge two dictionaries in Python:
```python
z = {**x, **y}
```
Or you can use the `dict.update()` method:
```python
z = x.copy()
z.update(y)
```
Both methods will create a new dictionary `z` with the combined keys and values from `x` and `y`.
Here's one way to do it using Python's built-in dictionary method `update`:
```
def merge(x, y):
    z = x.copy()
    z.update(y)
    return z
```
Or you can use the `**` operator to merge dictionaries:
```
def merge(x, y):
    return {**x, **y}
```
Both methods