Change pandas file for read_excel in bokeh callback

Here's an example code that demonstrates how to use the `groupby` and `agg` functions together:

Working with Time Series Data in Pandas: Reshaping Hour and Time Intervals on Index and Column for Analysis

Converting Python UDFs to Pandas UDFs for Enhanced Performance in PySpark Applications

Comparing Time Complexity and Performance of Three Approaches to Calculating Time Differences in Python

Navigating the Changes and Challenges in LinkedIn's Updated API: A Guide for Python Developers

Understanding the Behavior of Pandas GroupBy with Time Zone Conversion and DST Transition

Iterating Through Pandas DataFrames with Conditions Using itertuples()

Reading and Merging CSV Files with Different Amounts of Columns Using Pandas in Python

How to Install Pandas in VSCode: A Step-by-Step Guide for Data Scientists and Analysts