How do you save pandas?

To save a pandas DataFrame or Series to a file, you can use the `to_` methods like `to_csv`, `to_excel`, `to_json`, `to_pickle` etc. Here's an example of saving a DataFrame to a CSV file:

```python

import pandas as pd

df = pd.DataFrame({'Name': ['John', 'Mary', 'Peter'], 'Age': [20, 25, 30]})

Save the DataFrame to a CSV file

df.to_csv('data.csv', index=False)

```

This will create a CSV file named "data.csv" in the current working directory and save the DataFrame to it, excluding the index.

Similarly, you can use `to_excel` to save the DataFrame to an Excel file, `to_json` to save it to a JSON file, and so on.