Here is the red_sox.txt file 2011-07-02 Red Sox @ Astros Win 7-5 2011-07-03 Red
ID: 3884092 • Letter: H
Question
Here is the red_sox.txt file
2011-07-02 Red Sox @ Astros Win 7-5
2011-07-03 Red Sox @ Astros Win 2-1
2011-07-04 Red Sox vs Blue Jays Loss 7-9
2011-07-05 Red Sox vs Blue Jays Win 3-2
2011-07-06 Red Sox vs Blue Jays Win 6-4
2011-07-07 Red Sox vs Orioles Win 10-4
2011-07-08 Red Sox vs Orioles Win 10-3
2011-07-09 Red Sox vs Orioles Win 4-0
2011-07-10 Red Sox vs Orioles Win 8-6
2011-07-15 Red Sox @ Rays Loss 6-9
2011-07-16 Red Sox @ Rays Win 9-5
2011-07-17 Red Sox @ Rays Win 1-0
2011-07-18 Red Sox @ Orioles Win 15-10
2011-07-19 Red Sox @ Orioles Loss 2-6
2011-07-20 Red Sox @ Orioles Win 4-0
2011-07-22 Red Sox vs Mariners Win 7-4
2011-07-23 Red Sox vs Mariners Win 3-1
2011-07-24 Red Sox vs Mariners Win 12-8
2011-07-25 Red Sox vs Royals Loss 1-3
2011-07-26 Red Sox vs Royals Win 13-9
2011-07-27 Red Sox vs Royals Win 12-5
2011-07-28 Red Sox vs Royals Loss 3-4
2011-07-29 Red Sox @ White Sox Loss 1-3
2011-07-30 Red Sox @ White Sox Win 10-2
2011-07-31 Red Sox @ White Sox Win 5-3
Use Python Please...
Deliverables
There is one deliverable for this assignment:
hw2.py
It must be in an hw2 directory, which you must create inside a hw directory inside you it117 directory.
Make sure the script obeys all the rules in the Script Requirements page.
To test this script you must copy into your hw2 directory the file red_sox.txt from /home/ghoffman/course_files/it117_files.
Specification
Create the function team_average which has the following header
This function will return the average number of games won by the Red Sox from a text file with entries like this
This function should create a file object for the file whose name is given by the parameter filename.
If the file cannot be opened, use a try/except statement to print an error message and don't do any further work on the file.
The function will count the number of lines and the number of games the Red Sox won and use these values to compute the average games won by the team.
This average should be expressed as an integer.
Your hw2.py file must contain the following test code at the bottom of the file
Suggestions
Write this program in a step-by-step fashion using the technique of incremental development.
In other words, write a bit of code, test it, make whatever changes you need to get it working, and go on to the next step.
Write the function code to open the file for reading. This code should print an error message and exit the function if the file cannot be opened for reading.
Modify the function so it prints out the lines of the file.
Modify the function to use the split string method to create a list from the from the different fields in a line. Print this list.
For each line get the value of the won/lost field and print it. You will have to use a negative index number to get the value of this field. (Why?)
Count the number of lines in the file and return that number.
Count the number of wins and return that number.
Return the average as an integer percent.
Explanation / Answer
def team_average(filename):
try:
with open(filename) as fh:
win = 0
total = 0
winprnct = 0
for line in fh:
total += 1
if line.split()[-2] == "Win":
win += 1
if total > 0:
winprnct = 100*win//total
return winprnct
except IOError:
print "Error: File does not appear to exist."
return 0
team_average('xxxxxxx')
print(team_average('red_sox.txt'))
# code link: https://paste.ee/p/azGej
Sample execution:
Error: File does not appear to exist.
76