Python -Pandas - Leet code Get the Size of a DataFrame

Explanation of the Code

Importing Libraries: We import the pandas library to handle DataFrame operations.
Defining the Function: The function selectFirstRows is defined to take a DataFrame (employees) as input and return the first three rows.
Using .head(3): Inside the function, the .head(3) method is used to get the first three rows of the DataFrame.
Returning the Result: The function returns the resulting DataFrame with the first three rows.
Example DataFrame: We create an example DataFrame employees with the given data for testing.
Calling the Function: The selectFirstRows function is called with the employees DataFrame, and the result is printed.