Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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How to write in python "files" , program ask user how many name they like to write to a file with name file with names and the ask to write one name at each time and validate number entered is greater than zero before entering the loop

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Step 1: Algorithm of code

Algorithm: Writing Names to a File with User Input Validation

1. Initialize a variable num_names to 0.

2. Repeat the following until a valid number of names is entered:
a. Display a prompt to the user, asking how many names they would like to write to a file.
b. Try to read user input as an integer:
- If successful, store the entered value in num_names.
- If the value is greater than 0, exit the loop.
- If the value is not greater than 0, display an error message and repeat the loop.
- If the user enters a non-integer input, catch the ValueError and display an error message.

3. Set the file_name variable to "file_with_names.txt".

4. Open a file named file_name for writing and create a new file (if it doesn't exist) with the "w" mode. Use a context manager to ensure proper file handling.

5. Repeat for i from 1 to num_names:
a. Display a prompt asking the user to enter a name (e.g., "Enter name 1", "Enter name 2", etc.).
b. Read the user's input as a name.
c. Write the entered name to the file, followed by a newline character "\n", to separate each name on a new line.

6. Close the file to save the changes.

7. Display a confirmation message, indicating the number of names that have been written to the file.

8. End.

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for i in range
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for i in range
whats i mean and how program use it as defined letter

And for {} is there way to do it with () {i+1}

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