Python Programming: Grade analysis

I. Learner Objectives

Upon completion of this assignment, students should be able to:

• Open and close files
• Read from, write to, and update files
• Manipulate file handles
• Apply standard library functions: open(), close(), read(), write()
• Compose decision statements (if conditional statements)
• Create and utilize compound conditions

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II. Prerequisites

Before starting this assignment, students should be able to:

• Analyze a basic set of requirements and apply top-down design principles
• Define and use Python functions
• Implement guard code using if __name__ == "__main__":
• Summarize topics including:
  • What is a selection or conditional statement?
  • What is a compound condition?
  • What is a Boolean expression?

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III. Overview & Requirements

Write a Python program that processes numbers corresponding to student records read from a file and writes the required results to an output file.

Function Specifications

Implement the following functions:

1. read_student_record(file): Reads a line from the input file and returns a tuple (gpa, class_standing, age) as floats/ints.
2. calculate_sum(numbers): Returns the sum of the provided numbers (accepts a list of numeric arguments). Returns -1.0 if the list is empty.
3. calculate_mean(numbers): Returns the mean of the numbers. Returns -1.0 if the list is empty.
4. calculate_deviation(number, mean): Returns the deviation as number - mean.
5. calculate_variance(numbers, mean): Returns the variance as the average of squared deviations from the mean. Returns -1.0 if the list is empty.
6. calculate_standard_deviation(variance): Returns the standard deviation as the square root of the variance.
7. find_max(numbers): Returns the maximum value in a list of numbers
8. find_min(numbers): Returns the minimum value in a list of numbers
9. print_float(file, number, decimals=2): Writes a floating-point number to the output file (expects a file object opened for writing), formatted to the specified number of decimal places (default is 2).

Main Function Requirements

The main() function should:

• Open an input file named input.csv for reading.
• Open an output file named output.dat for writing.
• Read five student records from input.csv. Each record includes:
  • GPA
  • Class standing
  • Age
• Calculate the sum and mean for GPAs, class standings, and ages.
• Calculate the deviation of each GPA from the mean GPA.
• Calculate the variance and standard deviation of the GPAs.
• Determine the minimum and maximum GPA values.
• Write the results to output.dat.
• Close both the input and output files.

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IV. Input File Format

The input file input.dat should contain five student records, each on a separate line with the following format:

<GPA> <ClassStanding> <Age>

Example:

3.5 2 20
3.8 3 21
2.9 1 19
3.2 4 22
3.7 2 20

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V. Output File Format

The output file output.dat should contain the calculated statistics with appropriate labels.

Example:

Mean GPA: 3.42
Mean Class Standing: 2.4
Mean Age: 20.4
GPA Standard Deviation: 0.34
Minimum GPA: 2.9
Maximum GPA: 3.8

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VI. Submission Instructions

• Submit your solution by pushing your code to the GitHub Classroom repository provided for this assignment.
• Make sure all your code, including main.py, your README.md, and any other required files, are committed and pushed to your GitHub Classroom repository.
• Ensure your submission includes all necessary files to run your program and that your code runs as expected from the repository.