Classwork/Homework:
(Game: connect four) Connect four is a two-player board game in which the players alternately drop colored disks into a seven-column, six-row vertically suspended grid, as shown below.

The objective of the game is to connect four same-colored disks in a row, a column, or a diagonal before your opponent can do likewise. The program prompts two players to drop a red or yellow disk alternately. In the preceding figure, the red disk is shown in a dark color and the yellow in a light color. Whenever a disk is dropped, the program redisplays the board on the console and determines the status of the game (win, draw, or continue). Here is a sample run:

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Drop a red disk at column (0–6): 0
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|R| | | | | | |
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Drop a yellow disk at column (0–6): 4

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|R| | | |Y| | |
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Drop a yellow disk at column (0–6): 6 

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| | | | |Y| | |
| | | |Y|Y|Y|R|
| | |Y|R|R|Y|Y|
|R|Y|R|Y|R|R|R|
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The yellow player won
Do you want to play again?

Write the two-player program, Connect4_YI.py. Display at every move the board as shown in the example above. Include a prompt to continue playing.

Your program should include:
1. Good documentation
2. An introduction message
3. Functions
4. Main
5. An end of game message
6. Input/output

What is good documentation?
Answer:

1. Header with author’s name, assignment description, date and python version.
2. Comments in each function. A short sentence will be sufficient.
3. Comments for code snippets written for specific handling. An example might be checking if there are 3 in a row, or 4 in a row.
4. Comments to indicate unusual or rare situations that don’t follow a pattern or repetition.