> ## 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.

# For Index Replacement

#### Sourcery refactoring id: `for-index-replacement`

#### Description:

Replace item lookups in loops using the index with direct reference to the items

#### Before:

```python
for i in range(len(currencies)):
    print(currencies[i])
```

#### After:

```python
for currency in currencies:
    print(currency)
```

#### Explanation:

A pattern that is often used in Python for loops is to use `range(len(list))` to
generate a range of numbers that can be iterated over.

If the index `i` is only used to do list access this code can be improved by
iterating over the list directly, as in the above example.

This code is easier to understand, and a lot less cluttered. In particular being
able to use a meaningful name for `currency` greatly improves readability.

Note that this refactoring will only trigger where Sourcery can determine that
the collection (`currencies` in this case) is a list.