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

# Merge Dictionary Assignments

#### Sourcery refactoring id: `merge-dict-assign`

#### Description:

Declare the dictionary with values rather than creating an empty one and
assigning to it

#### Before:

```python
hats_i_own = {}
hats_i_own["panama"] = 1
hats_i_own["baseball_cap"] = 2
hats_i_own["bowler"] = 23
```

#### After:

```python
hats_i_own = {"panama": 1, "baseball_cap": 2, "bowler": 23}
```

#### Explanation:

When declaring a dictionary and filling it up with values one way that can come
naturally is to declare it as empty and then add entries to it.

This can be done in place, shortening the code and making the intent more
explicit. Now I just need to glance at one line to see that I'm filling a
variable with hats, rather than four.

The same holds true for filling up other collection types like sets and lists.