$$ A structure chart showing the functional decomposition of your program $($may be hand drawn

neatly and scanned into the report$)$

$$ An IPO chart for each user$-$defined function

$$ In your code add comments at the beginning of the script that summarizes the inputs, process,

and outputs for the program.

$$ For user$-$defined functions add comments to the function prototypes that describe the

preconditions and post condition for the function.

$$ Answer the following questions:

$1.$ What did you find most challenging with this program?

$2.$ What problems did you encounter and how did you solve them?

$3.$ What did you learn from writing this program?

Writing Gas Prices code python

This project consists of a series of programs to analyze gas prices between April $1993$ and August $2013.$

You will be provided with a text file named GasPrices.txt$.$ The file contains the weekly average prices for

a gallon of gas in the United States, beginning on April $5$th$,1993,$ and ending on August $26$th$,2013.$

Figure $8-8$ shows an example of the first few lines of the file$$s contents:

Figure $8-8$ The GasPrices.txt file

Each line in the file contains the average price for a gallon of gas on a specific date. Each line is

formatted in the following way:

MM$-$DD$-$YYYY:Price

MM is the two$-$digit month, DD is the two$-$digit day, and YYYY is the four$-$digit year. Price is the average

price per gallon of gas on the specified date.

To get full credit for this project, you must complete programs $1,2$ and $3.$ You will get extra credit for

completing programs $4,$ and $5($you will get credit for each extra program you complete$).$

$1.$ Average Price Per Year: Calculate the average price of gas per year, for each year in the file.

$($The file$$s data starts in April of $1993,$ and it ends in August $2013.$ Use the data that is present

for the years $1993$ and $2013).$ Produce a report showing each year and the average gas price for

that year.

$2.$ Highest and Lowest Prices Per Year: For each year in the file, determine the date and amount

for the lowest price, and the highest price. Produce a report showing for each year, the lowest

price and date on which it occurred and the highest price and the date on which it occurred

$($show one year per line$).$

$3.$ Average Price Per Month: Calculate the average price for each month in the file. Produce a

report that shows each month and year and the average price for that month and year.

$4.$ List of Prices, Lowest to Highest: Generate a text file that lists the dates and prices, sorted from

the lowest price to the highest.

$5.$ List of Prices, Highest to lowest: Generate a text file that lists the dates and prices, sorted from

$04-05-1993$:$1\mathrm{.}068$

$04-12-1993$:$1\mathrm{.}079$

$04-19-1993$:$1\mathrm{.}079$

$04-26-1993$:$1\mathrm{.}086$

$05-03-1993$:$1\mathrm{.}086$

$05-10-1993$:$1\mathrm{.}097$

$05-17-1993$:$1\mathrm{.}106$

$05-24-1993$:$1\mathrm{.}106$

$05-31-1993$:$1\mathrm{.}107$

$06-07-1993$:$1\mathrm{.}104$

$06-14-1993$:$1\mathrm{.}101$

$06-21-1993$:$1\mathrm{.}095$

$06-28-1993$:$1\mathrm{.}089$

$07-05-1993$:$1\mathrm{.}086$

$07-12-1993$:$1\mathrm{.}081$

$07-19-1993$:$1\mathrm{.}075$

$07-26-1993$:$1\mathrm{.}069$

$08-02-1993$:$1\mathrm{.}062$

$08-09-1993$:$1\mathrm{.}06$

$08-16-1993$:$1\mathrm{.}059$

$08-23-1993$:$1\mathrm{.}065$

$08-30-1993$:$1\mathrm{.}062$

$09-06-1993$:$1\mathrm{.}055$

$09-13-1993$:$1\mathrm{.}051$

$09-20-1993$:$1\mathrm{.}045$

$09-27-1993$:$1\mathrm{.}047$

$10-04-1993$:$1\mathrm{.}092$

$10-11-1993$:$1\mathrm{.}09$

$10-18-1993$:$1\mathrm{.}093$

$10-25-1993$:$1\mathrm{.}092$

$11-01-1993$:$1\mathrm{.}084$

$11-08-1993$:$1\mathrm{.}075$

$11-15-1993$:$1\mathrm{.}064$

$11-22-1993$:$1\mathrm{.}058$

$11-29-1993$:$1\mathrm{.}051$

$12-06-1993$:$1\mathrm{.}036$

$12-13-1993$:$1\mathrm{.}018$

$12-20-1993$:$1\mathrm{.}003$

$12-27-1993$:$0\mathrm{.}999$

$01-28-2013$:$3\mathrm{.}427$

$02-04-2013$:$3\mathrm{.}604$

$02-11-2013$:$3\mathrm{.}677$

$02-18-2013$:$3\mathrm{.}812$

$02-25-2013$:$3\mathrm{.}851$

$03-04-2013$:$3\mathrm{.}826$

$03-11-2013$:$3\mathrm{.}779$

$03-18-2013$:$3\mathrm{.}764$

$03-25-2013$:$3\mathrm{.}746$

$04-01-2013$:$3\mathrm{.}714$

$04-08-2013$:$3\mathrm{.}676$

$04-15-2013$:$3\mathrm{.}611$

$04-22-2013$:$3\mathrm{.}603$

$04-29-2013$:$3\mathrm{.}587$

$05-06-2013$:$3\mathrm{.}602$

$05-13-2013$:$3\mathrm{.}665$

$05-20-2013$:$3\mathrm{.}729$

$05-27-2013$:$3\mathrm{.}704$

$06-03-2013$:$3\mathrm{.}705$

$06-10-2013$:$3\mathrm{.}715$

$06-17-2013$:$3\mathrm{.}689$

$06-24-2013$:$3\mathrm{.}645$

$07-01-2013$:$3\mathrm{.}567$

$07-08-2013$:$3\mathrm{.}563$

$07-15-2013$:$3\mathrm{.}706$

$07-22-2013$:$3\mathrm{.}751$

$07-29-2013$:$3\mathrm{.}716$

$08-05-2013$:$3\mathrm{.}701$

$08-12-2013$:$3\mathrm{.}633$

$08-19-2013$:$3\mathrm{.}622$

$08-26-2013$:$3\mathrm{.}623$