Create an application for a school system using Python to open and process files of different formats, transfer data, fetch information from school webpages, analyze content, and generate summaries for the school principal about students' assessment activities. Implement Exception Handling techniques for controling database accessiblity and connection. Also create and apply your customized dataset.

School Assessment Data Analysis Application Objective: The school administration wants to streamline the process of collecting, analyzing, and summarizing assessment data for the principal. The application should be able to handle various file formats, extract information from webpages, and provide insightful summaries for better decision-making.

System Features:

1. File Processing: Accepts files in different formats such as CSV, Excel, and plain text. Opens and reads the content of the files.
2. Data Transfer: Transfers data between different files based on predefined criteria. Merges data from multiple sources to create comprehensive datasets.
3. Web Data Retrieval: Utilizes the urlopen function to fetch data from relevant school webpages. Extracts assessment information, student scores, and other relevant details.
4. Content Analysis: Analyzes assessment data to identify trends, patterns, and outliers. Generates statistical summaries, class averages, and individual student performance metrics.
5. Summarization: Produces summaries of assessment activities for the school principal. Highlights key insights, areas of improvement, and outstanding achievements.

$ python schoolfilesystem.py 
File processed: sample_scores.csv
Data transferred (placeholder)
Web data fetched from: http://example.com/data
Content analyzed (placeholder)

        School Assessment Summary Report:

        1. Overall Performance:
           - Average score: 85.00

        4. Web Data Insights:
           - Web data from http://example.com/data (placeholder)

        Report generated on: 2024-01-19

$ python musicstreamingapp 

Songs by Jelly Roll:
'Save Me' by Jelly Roll (Album: God's Country, Genre: Country, Length: 3:45)


Playlist: My Playlist 1
1. 'Save Me' by Jelly Roll (Album: God's Country, Genre: Country, Length: 3:45)
2. 'Dawns' by Zach Bryant (Album: Sarah's Place, Genre: Country, Length: 4:20)