LESSON 02 – WRITING TO A FILE

LESSON WORK

PROGRAM 1 – TENTH

Write a program that outputs every 10^th numbers from 0 to 500 in a text file called “everyTen.txt”.

PROGRAM 2 – LEAP YEAR

Write a program that outputs every leap year starting at the year 1582 until now in a text file called “leapYear.txt”. You will need to research the mathematical definition of a leap year.

PROGRAM 3 – HIGH SCORES

A text file contains a list of the top 5 high scores for a game. Your job is to ask the use for their name and score and insert that into the list of high scores if the score is high enough.

The file score.txt should look like this (though you can organize it any way you’d like):

Pat,424

Sandro,88

Kylie,79

Ryan,75

Dylan,63

Amber,61

SAMPLE OUTPUT 1 Enter your name Jonah Enter your score 53 Sorry, you are not in the top 5. Here is the list of top 5 scores: Pat 424 Sandro 88 Kylie 79 Ryan 75 Dylan 63 Amber 61

SAMPLE OUTPUT 2 Enter your name Mikemeister Enter your score 65 Congrats! You are in the top 5! Here is the list of top 5 scores: Pat 424 Sandro 88 Kylie 79 Ryan 75 Mikemeister 65 Dylan 63

HINT:

You will have to read in the file one line at a time. The split function will allow you to separate a line based on a separator (comma).

PROGRAM 4 – SPLITTER

Write the function called splitter that will read from a text file and copy all the content into two files splitting it such that all odd numbered characters go into one file and all even numbered characters go into the other file.

The function header should be:

def splitter(src, dest1, dest2):

where

src is a string holding the source’s filename

dest1 is a string holding the first destination filename

dest2 is a string holding the second destination filename

EXAMPLE

If the file source.txt contained the following:

Hello world. How are you?

then the function call

splitter("source.txt", "dest1.txt", "dest2.txt")

will place

Hlowrd o r o?

in the file dest1.txt, and

el ol.Hwaeyu

in the file dest2.txt.

PROGRAM 5 – MERGER

Write the program that will merge files created in the previous problem back into a single file.

The function header should be

def merge(src1, src2, dest):

NOTE

After the following two function calls

splitter("source.txt", "dest1.txt", "dest2.txt")

merge ("dest1.txt", "dest2.txt", "merged.txt")

then the file merged.txt should be the same as source.txt.