Error message:
<pre><code class="lang-plaintext">&lt;ipython-input-9-bae83c20cb8e&gt;:13: SettingWithCopyWarning: 
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead

See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
</code></pre>
Possible problem:
This could happen when a dataframe is to be manipulated by certain operations after it had underwent a drop command.
Possible solution:
Create a copy of the dataframe and use it for data manipulation.

Error message:

```plaintext
<ipython-input-9-bae83c20cb8e>:13: SettingWithCopyWarning: 
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead

See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
```

Possible problem:

This could happen when a dataframe is to be manipulated by certain operations after it had underwent a drop command.

Possible solution:

Create a copy of the dataframe and use it for data manipulation.

Python Error: SettingWithCopyWarning