# How to set a dynamic path for the data source?

**URL:** <https://discourse.greatexpectations.io/t/how-to-set-a-dynamic-path-for-the-data-source/253>\
**Category:** Archive\
**Tags:** help-wanted\
**Created:** [June 5, 2020, 1:29pm UTC](https://discourse.greatexpectations.io/t/how-to-set-a-dynamic-path-for-the-data-source/253 "2020-06-05T13:29:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![chamaoskurumi](https://avatars.discourse-cdn.com/v4/letter/c/46a35a/32.png) [@chamaoskurumi](https://discourse.greatexpectations.io/u/chamaoskurumi)\
**Post date:** [June 5, 2020, 1:29pm UTC](https://discourse.greatexpectations.io/t/how-to-set-a-dynamic-path-for-the-data-source/253/1 "2020-06-05T13:29:15Z")

</div>

Hi GE folks 👋 !

In my pipeline the datasource filename changes every day, but follows this systematic pattern: `tableXYZ_YYYYMMDD.csv` .

Hence, I need to set the path dynamically, which I tried to do by adding a few lines of code at the top of the suite’s jupyter notebook.

This is what I did:

1.) I opened the suite’s notebook via

```
great_expectations suite edit "Table Checker"

```

2.) I changed the first chunk of the notebook to

```
import glob 
import datetime
import great_expectations as ge
import great_expectations.jupyter_ux
from great_expectations.data_context.types.resource_identifiers import (
    ValidationResultIdentifier,
)

context = ge.data_context.DataContext()

expectation_suite_name = "Table Checker"
suite = context.get_expectation_suite(expectation_suite_name)
suite.expectations = []

path_to_csv = glob.glob("../data/tableXYZ*.csv")[0]

batch_kwargs = {
    "data_asset_name": "Table XYZ",
    "datasource": "Data Provider ZZZ",
    "path": path_to_csv,
}
batch = context.get_batch(batch_kwargs, suite)
batch.head()

```

3.) I ran the jupyter notebook (sucessfully) and saved it.

4.) But when I return to the juypter notebook later via

```
great_expectations suite edit "Table Checker"

```

the code from 2.) got overwritten.

* * *

**Questions:**

- How can I make sure changes in the first code chunk of the suite jupyter notebook do not get overwritten later?
- Is there a more elegant or sustainable solution for setting the path to datasource dynamically?

Best from Berlin and thx for your great work 🙇‍♂️,

Guido