Difference between revisions of "CSC111 Homework 9 2011"

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(Problem #1)
(Problem #1)
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:Note that this file does not have triple double-quotes around the list of presidents, and that it does have a header, i.e. the first line defines what the different fields are, but is not a valid president line.
 
:Note that this file does not have triple double-quotes around the list of presidents, and that it does have a header, i.e. the first line defines what the different fields are, but is not a valid president line.
  
 +
==Requirements==
 +
* Your program should use functions.  Study Homework 7 a second time to get inspiration for your program organization.
 
* The output of your program should be only a few lines long.  We do not want to see the list of presidents.  Just something like this:
 
* The output of your program should be only a few lines long.  We do not want to see the list of presidents.  Just something like this:
  
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* The number of presidents (44) should be the number found by your program in the text file.  When I test your program, I may provide a '''presidents.txt''' file with fewer than 44 presidents.  Or a file that has just a header and no presidents at all!  Or even a file with nothing in it, just empty.  Be sure you test your program well so that it doesn't crash on any of these potential input files.
 
* The number of presidents (44) should be the number found by your program in the text file.  When I test your program, I may provide a '''presidents.txt''' file with fewer than 44 presidents.  Or a file that has just a header and no presidents at all!  Or even a file with nothing in it, just empty.  Be sure you test your program well so that it doesn't crash on any of these potential input files.
  
 +
==Submission==
 
* Submit your program as follows:
 
* Submit your program as follows:
  
 
  rsubmit hw9 hw9a.py
 
  rsubmit hw9 hw9a.py
 
  
 
:if you worked on beowulf, or submit your program using this page: http://cs.smith.edu/~111a/submit9.htm
 
:if you worked on beowulf, or submit your program using this page: http://cs.smith.edu/~111a/submit9.htm

Revision as of 13:52, 13 November 2011

--D. Thiebaut 12:28, 13 November 2011 (EST)


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Problem #1

  • Write a program called hw9a.py that outputs the average length of the presidency of US presidents, categorized by party. Your program should get the information from a file called presidents.txt, whose contents is available here.
If you are working on beowulf, you can get a copy of the file into your account this way:
 getcopy presidents.txt
Note that this file does not have triple double-quotes around the list of presidents, and that it does have a header, i.e. the first line defines what the different fields are, but is not a valid president line.

Requirements

  • Your program should use functions. Study Homework 7 a second time to get inspiration for your program organization.
  • The output of your program should be only a few lines long. We do not want to see the list of presidents. Just something like this:
Average length of presidency.
File presidents.txt contains 44 presidents.
Democratic presidents: x.xx years
Republican presidents: x.xx years
Others: x.xx years
  • The number of presidents (44) should be the number found by your program in the text file. When I test your program, I may provide a presidents.txt file with fewer than 44 presidents. Or a file that has just a header and no presidents at all! Or even a file with nothing in it, just empty. Be sure you test your program well so that it doesn't crash on any of these potential input files.

Submission

  • Submit your program as follows:
rsubmit hw9 hw9a.py
if you worked on beowulf, or submit your program using this page: http://cs.smith.edu/~111a/submit9.htm