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Update README.md

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Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>
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# glob -- Finding files in a directory
# [glob](https://docs.python.org/3/library/glob.html) : Finding files in a directory
## Goal
We want to deal with many files in a directory. What is an easy way to get the filename in a directory?
@ -57,8 +57,23 @@ print(list)
```python console
['Testfile_1.mat', 'Testfile_10.mat', 'Testfile_2.mat', 'Testfile_3.mat']
```
Hmmm... This result is not helpful.
### Sorting the filenames with [natsort](https://pypi.org/project/natsort/)
```shell
pip install natsort
```
```python
import glob
from natsort import natsorted
list = natsorted(glob.glob("*.mat"))
print(list)
```
```python console
['Testfile_1.mat', 'Testfile_2.mat', 'Testfile_3.mat', 'Testfile_10.mat']
```