Lära Saving and Sharing Results | Visualizing and Presenting Information

When you want to share your work or keep a record for later, saving your results to a file is a practical skill. In Python, you can write text files using the open(), write(), and close() functions. Writing to a file means you can store summaries, reports, or any information you've generated during your daily tasks, making it easy to review or distribute your findings.


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# Saving a summary of expenses to a text file

expenses_summary = "Total spent this week: $215.30\nBiggest expense: Groceries - $75.00\nLowest expense: Coffee - $5.50"

file = open("expenses_summary.txt", "w")
file.write(expenses_summary)
file.close()

When saving files, always use clear and descriptive names, such as "expenses_summary.txt" or "weekly_report.txt", so you can easily identify their contents later. It's important to handle potential errors, like trying to write to a file that is read-only or on a full disk. Using the with statement is a best practice because it automatically closes the file, even if an error occurs, and helps prevent data loss or file corruption.


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# Writing a formatted report to a file and checking for successful completion

report = (
    "Expense Report\n"
    "==============\n"
    "Total: $215.30\n"
    "Average per day: $30.76\n"
    "Highest: $75.00 (Groceries)\n"
    "Lowest: $5.50 (Coffee)\n"
)

try:
    with open("weekly_expense_report.txt", "w") as file:
        file.write(report)
    print("Report successfully saved.")
except Exception as e:
    print("Error saving report:", e)

1. Which function opens a file for writing in Python?

2. Why is it important to close a file after writing?

3. Fill in the blanks to write a string to a file.

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