Difference between revisions of "CSC111 Homework"
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==Your Assignment== | ==Your Assignment== | ||
− | * Your program | + | * Your assignment is to use the program below as a starting point. You will call it hw7.py. |
+ | * You cannot change any of the code below, except add statements inside the different functions. | ||
+ | * You can figure out what the functions do because the main() function is complete, and is given to you in its entirety. | ||
+ | * The only statements for you to add are '''inside''' the functions '''removeHeader( )''', '''presName()''', '''reworkDate()''', '''printPresidency()''', and '''printAll()'''. | ||
+ | * You cannot modify '''main()'''. It is complete and works fine. | ||
+ | * You have to figure out what the functions do, and what they return. | ||
+ | * The two programs, the one above, and yours, must perform the same work, and output the same information. | ||
<br /> | <br /> |
Revision as of 22:57, 1 November 2011
--D. Thiebaut 22:30, 1 November 2011 (EDT)
This assignment is due on the evening of Nov. 8, at midnight.
Functions
- Take the code below and make it a program. Run it and observe its output.
presidents = \
"""Presidency ,President ,Wikipedia Entry,Took office ,Left office ,Party ,Portrait,Thumbnail,Home State
1,George Washington,http://en.wikipedia.org/wiki/George_Washington,30/04/1789,4/03/1797,Independent ,GeorgeWashington.jpg,thmb_GeorgeWashington.jpg,Virginia
2,John Adams,http://en.wikipedia.org/wiki/John_Adams,4/03/1797,4/03/1801,Federalist ,JohnAdams.jpg,thmb_JohnAdams.jpg,Massachusetts
3,Thomas Jefferson,http://en.wikipedia.org/wiki/Thomas_Jefferson,4/03/1801,4/03/1809,Democratic-Republican ,Thomasjefferson.gif,thmb_Thomasjefferson.gif,Virginia
4,James Madison,http://en.wikipedia.org/wiki/James_Madison,4/03/1809,4/03/1817,Democratic-Republican ,JamesMadison.gif,thmb_JamesMadison.gif,Virginia
5,James Monroe,http://en.wikipedia.org/wiki/James_Monroe,4/03/1817,4/03/1825,Democratic-Republican ,JamesMonroe.gif,thmb_JamesMonroe.gif,Virginia
6,John Quincy Adams,http://en.wikipedia.org/wiki/John_Quincy_Adams,4/03/1825,4/03/1829,Democratic-Republican/National Republican ,JohnQuincyAdams.gif,thmb_JohnQuincyAdams.gif,Massachusetts
7,Andrew Jackson,http://en.wikipedia.org/wiki/Andrew_Jackson,4/03/1829,4/03/1837,Democratic ,Andrew_jackson_head.gif,thmb_Andrew_jackson_head.gif,Tennessee
8,Martin Van Buren,http://en.wikipedia.org/wiki/Martin_Van_Buren,4/03/1837,4/03/1841,Democratic ,MartinVanBuren.gif,thmb_MartinVanBuren.gif,New York
9,William Henry Harrison,http://en.wikipedia.org/wiki/William_Henry_Harrison,4/03/1841,4/04/1841,Whig,WilliamHenryHarrison.gif,thmb_WilliamHenryHarrison.gif,Ohio
10,John Tyler,http://en.wikipedia.org/wiki/John_Tyler,4/04/1841,4/03/1845,Whig,JohnTyler.jpg,thmb_JohnTyler.jpg,Virginia
11,James K. Polk,http://en.wikipedia.org/wiki/James_K._Polk,4/03/1845,4/03/1849,Democratic ,JamesKPolk.gif,thmb_JamesKPolk.gif,Tennessee
12,Zachary Taylor,http://en.wikipedia.org/wiki/Zachary_Taylor,4/03/1849,9/07/1850,Whig,ZacharyTaylor.jpg,thmb_ZacharyTaylor.jpg,Louisiana
13,Millard Fillmore,http://en.wikipedia.org/wiki/Millard_Fillmore,9/07/1850,4/03/1853,Whig,MillardFillmore.png,thmb_MillardFillmore.png,New York
14,Franklin Pierce,http://en.wikipedia.org/wiki/Franklin_Pierce,4/03/1853,4/03/1857,Democratic ,FranklinPierce.gif,thmb_FranklinPierce.gif,New Hampshire
15,James Buchanan,http://en.wikipedia.org/wiki/James_Buchanan,4/03/1857,4/03/1861,Democratic ,JamesBuchanan.gif,thmb_JamesBuchanan.gif,Pennsylvania
16,Abraham Lincoln,http://en.wikipedia.org/wiki/Abraham_Lincoln,4/03/1861,15/04/1865,Republican/National Union,AbrahamLincoln.jpg,thmb_AbrahamLincoln.jpg,Illinois
17,Andrew Johnson,http://en.wikipedia.org/wiki/Andrew_Johnson,15/04/1865,4/03/1869,Democratic/National Union,AndrewJohnson.gif,thmb_AndrewJohnson.gif,Tennessee
18,Ulysses S. Grant,http://en.wikipedia.org/wiki/Ulysses_S._Grant,4/03/1869,4/03/1877,Republican ,UlyssesSGrant.gif,thmb_UlyssesSGrant.gif,Ohio
19,Rutherford B. Hayes,http://en.wikipedia.org/wiki/Rutherford_B._Hayes,4/03/1877,4/03/1881,Republican ,RutherfordBHayes.png,thmb_RutherfordBHayes.png,Ohio
20,James A. Garfield,http://en.wikipedia.org/wiki/James_A._Garfield,4/03/1881,19/09/1881,Republican ,James_Garfield.jpg,thmb_James_Garfield.jpg,Ohio
21,Chester A. Arthur,http://en.wikipedia.org/wiki/Chester_A._Arthur,19/09/1881,4/03/1885,Republican ,ChesterAArthur.gif,thmb_ChesterAArthur.gif,New York
22,Grover Cleveland,http://en.wikipedia.org/wiki/Grover_Cleveland,4/03/1885,4/03/1889,Democratic ,Grover_Cleveland_2.jpg,thmb_Grover_Cleveland_2.jpg,New York
23,Benjamin Harrison,http://en.wikipedia.org/wiki/Benjamin_Harrison,4/03/1889,4/03/1893,Republican ,BenjaminHarrison.gif,thmb_BenjaminHarrison.gif,Indiana
24,Grover Cleveland,http://en.wikipedia.org/wiki/Grover_Cleveland,4/03/1893,4/03/1897,Democratic ,Grover_Cleveland.jpg,thmb_Grover_Cleveland.jpg,New York
25,William McKinley,http://en.wikipedia.org/wiki/William_McKinley,4/03/1897,14/9/1901,Republican ,WilliamMcKinley.gif,thmb_WilliamMcKinley.gif,Ohio
26,Theodore Roosevelt,http://en.wikipedia.org/wiki/Theodore_Roosevelt,14/9/1901,4/3/1909,Republican ,TheodoreRoosevelt.jpg,thmb_TheodoreRoosevelt.jpg,New York
27,William Howard Taft,http://en.wikipedia.org/wiki/William_Howard_Taft,4/3/1909,4/03/1913,Republican ,WilliamHowardTaft.jpg,thmb_WilliamHowardTaft.jpg,Ohio
28,Woodrow Wilson,http://en.wikipedia.org/wiki/Woodrow_Wilson,4/03/1913,4/03/1921,Democratic ,WoodrowWilson.gif,thmb_WoodrowWilson.gif,New Jersey
29,Warren G. Harding,http://en.wikipedia.org/wiki/Warren_G._Harding,4/03/1921,2/8/1923,Republican ,WarrenGHarding.gif,thmb_WarrenGHarding.gif,Ohio
30,Calvin Coolidge,http://en.wikipedia.org/wiki/Calvin_Coolidge,2/8/1923,4/03/1929,Republican ,CoolidgeWHPortrait.gif,thmb_CoolidgeWHPortrait.gif,Massachusetts
31,Herbert Hoover,http://en.wikipedia.org/wiki/Herbert_Hoover,4/03/1929,4/03/1933,Republican ,HerbertHover.gif,thmb_HerbertHover.gif,Iowa
32,Franklin D. Roosevelt,http://en.wikipedia.org/wiki/Franklin_D._Roosevelt,4/03/1933,12/4/1945,Democratic,FranklinDRoosevelt.gif,thmb_FranklinDRoosevelt.gif,New York
33,Harry S. Truman,http://en.wikipedia.org/wiki/Harry_S._Truman,12/4/1945,20/01/1953,Democratic,HarryTruman.jpg,thmb_HarryTruman.jpg,Missouri
34,Dwight D. Eisenhower,http://en.wikipedia.org/wiki/Dwight_D._Eisenhower,20/01/1953,20/01/1961,Republican ,Dwight_D_Eisenhower.jpg,thmb_Dwight_D_Eisenhower.jpg,Texas
35,John F. Kennedy,http://en.wikipedia.org/wiki/John_F._Kennedy,20/01/1961,22/11/1963,Democratic,John_F_Kennedy.jpg,thmb_John_F_Kennedy.jpg,Massachusetts
36,Lyndon B. Johnson,http://en.wikipedia.org/wiki/Lyndon_B._Johnson,22/11/1963,20/1/1969,Democratic,Lyndon_B_Johnson.gif,thmb_Lyndon_B_Johnson.gif,Texas
37,Richard Nixon,http://en.wikipedia.org/wiki/Richard_Nixon,20/1/1969,9/8/1974,Republican,RichardNixon.gif,thmb_RichardNixon.gif,California
38,Gerald Ford,http://en.wikipedia.org/wiki/Gerald_Ford,9/8/1974,20/01/1977,Republican,Gerald_R_Ford.jpg,thmb_Gerald_R_Ford.jpg,Michigan
39,Jimmy Carter,http://en.wikipedia.org/wiki/Jimmy_Carter,20/01/1977,20/01/1981,Democratic ,James_E_Carter.gif,thmb_James_E_Carter.gif,Georgia
40,Ronald Reagan,http://en.wikipedia.org/wiki/Ronald_Reagan,20/01/1981,20/01/1989,Republican ,ReaganWH.jpg,thmb_ReaganWH.jpg,California
41,George H. W. Bush,http://en.wikipedia.org/wiki/George_H._W._Bush,20/01/1989,20/01/1993,Republican ,George_H_W_Bush.gif,thmb_George_H_W_Bush.gif,Texas
42,Bill Clinton,http://en.wikipedia.org/wiki/Bill_Clinton,20/01/1993,20/01/2001,Democratic ,Clinton.jpg,thmb_Clinton.jpg,Arkansas
43,George W. Bush,http://en.wikipedia.org/wiki/George_W._Bush,20/01/2001,20/01/2009,Republican ,George_W_Bush.jpg,thmb_George_W_Bush.jpg,Texas
44,Barack Obama,http://en.wikipedia.org/wiki/Barack_Obama,20/01/2009,Incumbent , Democratic ,Barack_Obama.jpg,thmb_Barack_Obama.jpg,Illinois"""
monthsTable = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
def main():
# get a list of individual lines, one president per line
lines = presidents.split( '\n' )
# remove the header
header = lines[0]
lines = lines[1:]
# treat each president, one at a time
for line in lines:
# get the different fields
presidency ,president ,wikipediaEntry, tookOffice ,leftOffice ,party ,portrait, thumbnail, homeState = line.split( ',' )
# rework the president's name
presidentWords = president.split( )
name = presidentWords[-1] + ', ' + ' '.join( presidentWords[0:-1] )
# replace numeric month by 3-letter month
day, month, year1 = tookOffice.split( '/' )
# remove leading 0 from month
if month[0] == '0':
month = month[1]
# transform it into an integer to use it as an index in monthsTable
month = eval( month )
# if month is 1, get monthsTable[0], which is "Jan". Same for 2, get "Feb", etc.
month = monthsTable[ month -1 ]
# put back together tookOffice date
tookOffice = " ".join( [ day, month, year1 ] )
# same work with leftOffice, if not "Incumbent"
if leftOffice.strip() != "Incumbent":
day, month, year2 = leftOffice.split( '/' )
# remove leading 0 from month
if month[0] == '0': month = month[1]
# transform to a number that can be used as index in monthsTable
month = eval( month )
# if month is 1, get monthsTable[0], which is "Jan". Same for 2, get "Feb", etc.
month = monthsTable[ month -1 ]
leftOffice = " ".join( [ day , month, year2 ] )
# display selected information, nicely formatted
print( "%2s" % presidency, end="" )
if presidency in ['1', '21', '31', '41']:
print( "st President: ", end="" )
elif presidency in ['2', '22', '32', '42']:
print( "nd President: ", end="" )
elif presidency in ['3', '23', '33', '43']:
print( "rd President: ", end="" )
else:
print( "th President: ", end="" )
# president's name
print( "%-30s" % (name+','), end="" )
# took office...
print( " took office on %11s" % tookOffice, sep="", end="" )
# left office...
if leftOffice.strip() == "Incumbent":
print( ", incumbent" )
continue
print( ", left office on %11s" % leftOffice, ": ", eval( year2 )-eval( year1 ), "-year presidency.", sep="" )
print()
main()
Your Assignment
- Your assignment is to use the program below as a starting point. You will call it hw7.py.
- You cannot change any of the code below, except add statements inside the different functions.
- You can figure out what the functions do because the main() function is complete, and is given to you in its entirety.
- The only statements for you to add are inside the functions removeHeader( ), presName(), reworkDate(), printPresidency(), and printAll().
- You cannot modify main(). It is complete and works fine.
- You have to figure out what the functions do, and what they return.
- The two programs, the one above, and yours, must perform the same work, and output the same information.
presidents = \
"""Presidency ,President ,Wikipedia Entry,Took office ,Left office ,Party ,Portrait,Thumbnail,Home State
1,George Washington,http://en.wikipedia.org/wiki/George_Washington,30/04/1789,4/03/1797,Independent ,GeorgeWashington.jpg,thmb_GeorgeWashington.jpg,Virginia
2,John Adams,http://en.wikipedia.org/wiki/John_Adams,4/03/1797,4/03/1801,Federalist ,JohnAdams.jpg,thmb_JohnAdams.jpg,Massachusetts
3,Thomas Jefferson,http://en.wikipedia.org/wiki/Thomas_Jefferson,4/03/1801,4/03/1809,Democratic-Republican ,Thomasjefferson.gif,thmb_Thomasjefferson.gif,Virginia
4,James Madison,http://en.wikipedia.org/wiki/James_Madison,4/03/1809,4/03/1817,Democratic-Republican ,JamesMadison.gif,thmb_JamesMadison.gif,Virginia
5,James Monroe,http://en.wikipedia.org/wiki/James_Monroe,4/03/1817,4/03/1825,Democratic-Republican ,JamesMonroe.gif,thmb_JamesMonroe.gif,Virginia
6,John Quincy Adams,http://en.wikipedia.org/wiki/John_Quincy_Adams,4/03/1825,4/03/1829,Democratic-Republican/National Republican ,JohnQuincyAdams.gif,thmb_JohnQuincyAdams.gif,Massachusetts
7,Andrew Jackson,http://en.wikipedia.org/wiki/Andrew_Jackson,4/03/1829,4/03/1837,Democratic ,Andrew_jackson_head.gif,thmb_Andrew_jackson_head.gif,Tennessee
8,Martin Van Buren,http://en.wikipedia.org/wiki/Martin_Van_Buren,4/03/1837,4/03/1841,Democratic ,MartinVanBuren.gif,thmb_MartinVanBuren.gif,New York
9,William Henry Harrison,http://en.wikipedia.org/wiki/William_Henry_Harrison,4/03/1841,4/04/1841,Whig,WilliamHenryHarrison.gif,thmb_WilliamHenryHarrison.gif,Ohio
10,John Tyler,http://en.wikipedia.org/wiki/John_Tyler,4/04/1841,4/03/1845,Whig,JohnTyler.jpg,thmb_JohnTyler.jpg,Virginia
11,James K. Polk,http://en.wikipedia.org/wiki/James_K._Polk,4/03/1845,4/03/1849,Democratic ,JamesKPolk.gif,thmb_JamesKPolk.gif,Tennessee
12,Zachary Taylor,http://en.wikipedia.org/wiki/Zachary_Taylor,4/03/1849,9/07/1850,Whig,ZacharyTaylor.jpg,thmb_ZacharyTaylor.jpg,Louisiana
13,Millard Fillmore,http://en.wikipedia.org/wiki/Millard_Fillmore,9/07/1850,4/03/1853,Whig,MillardFillmore.png,thmb_MillardFillmore.png,New York
14,Franklin Pierce,http://en.wikipedia.org/wiki/Franklin_Pierce,4/03/1853,4/03/1857,Democratic ,FranklinPierce.gif,thmb_FranklinPierce.gif,New Hampshire
15,James Buchanan,http://en.wikipedia.org/wiki/James_Buchanan,4/03/1857,4/03/1861,Democratic ,JamesBuchanan.gif,thmb_JamesBuchanan.gif,Pennsylvania
16,Abraham Lincoln,http://en.wikipedia.org/wiki/Abraham_Lincoln,4/03/1861,15/04/1865,Republican/National Union,AbrahamLincoln.jpg,thmb_AbrahamLincoln.jpg,Illinois
17,Andrew Johnson,http://en.wikipedia.org/wiki/Andrew_Johnson,15/04/1865,4/03/1869,Democratic/National Union,AndrewJohnson.gif,thmb_AndrewJohnson.gif,Tennessee
18,Ulysses S. Grant,http://en.wikipedia.org/wiki/Ulysses_S._Grant,4/03/1869,4/03/1877,Republican ,UlyssesSGrant.gif,thmb_UlyssesSGrant.gif,Ohio
19,Rutherford B. Hayes,http://en.wikipedia.org/wiki/Rutherford_B._Hayes,4/03/1877,4/03/1881,Republican ,RutherfordBHayes.png,thmb_RutherfordBHayes.png,Ohio
20,James A. Garfield,http://en.wikipedia.org/wiki/James_A._Garfield,4/03/1881,19/09/1881,Republican ,James_Garfield.jpg,thmb_James_Garfield.jpg,Ohio
21,Chester A. Arthur,http://en.wikipedia.org/wiki/Chester_A._Arthur,19/09/1881,4/03/1885,Republican ,ChesterAArthur.gif,thmb_ChesterAArthur.gif,New York
22,Grover Cleveland,http://en.wikipedia.org/wiki/Grover_Cleveland,4/03/1885,4/03/1889,Democratic ,Grover_Cleveland_2.jpg,thmb_Grover_Cleveland_2.jpg,New York
23,Benjamin Harrison,http://en.wikipedia.org/wiki/Benjamin_Harrison,4/03/1889,4/03/1893,Republican ,BenjaminHarrison.gif,thmb_BenjaminHarrison.gif,Indiana
24,Grover Cleveland,http://en.wikipedia.org/wiki/Grover_Cleveland,4/03/1893,4/03/1897,Democratic ,Grover_Cleveland.jpg,thmb_Grover_Cleveland.jpg,New York
25,William McKinley,http://en.wikipedia.org/wiki/William_McKinley,4/03/1897,14/9/1901,Republican ,WilliamMcKinley.gif,thmb_WilliamMcKinley.gif,Ohio
26,Theodore Roosevelt,http://en.wikipedia.org/wiki/Theodore_Roosevelt,14/9/1901,4/3/1909,Republican ,TheodoreRoosevelt.jpg,thmb_TheodoreRoosevelt.jpg,New York
27,William Howard Taft,http://en.wikipedia.org/wiki/William_Howard_Taft,4/3/1909,4/03/1913,Republican ,WilliamHowardTaft.jpg,thmb_WilliamHowardTaft.jpg,Ohio
28,Woodrow Wilson,http://en.wikipedia.org/wiki/Woodrow_Wilson,4/03/1913,4/03/1921,Democratic ,WoodrowWilson.gif,thmb_WoodrowWilson.gif,New Jersey
29,Warren G. Harding,http://en.wikipedia.org/wiki/Warren_G._Harding,4/03/1921,2/8/1923,Republican ,WarrenGHarding.gif,thmb_WarrenGHarding.gif,Ohio
30,Calvin Coolidge,http://en.wikipedia.org/wiki/Calvin_Coolidge,2/8/1923,4/03/1929,Republican ,CoolidgeWHPortrait.gif,thmb_CoolidgeWHPortrait.gif,Massachusetts
31,Herbert Hoover,http://en.wikipedia.org/wiki/Herbert_Hoover,4/03/1929,4/03/1933,Republican ,HerbertHover.gif,thmb_HerbertHover.gif,Iowa
32,Franklin D. Roosevelt,http://en.wikipedia.org/wiki/Franklin_D._Roosevelt,4/03/1933,12/4/1945,Democratic,FranklinDRoosevelt.gif,thmb_FranklinDRoosevelt.gif,New York
33,Harry S. Truman,http://en.wikipedia.org/wiki/Harry_S._Truman,12/4/1945,20/01/1953,Democratic,HarryTruman.jpg,thmb_HarryTruman.jpg,Missouri
34,Dwight D. Eisenhower,http://en.wikipedia.org/wiki/Dwight_D._Eisenhower,20/01/1953,20/01/1961,Republican ,Dwight_D_Eisenhower.jpg,thmb_Dwight_D_Eisenhower.jpg,Texas
35,John F. Kennedy,http://en.wikipedia.org/wiki/John_F._Kennedy,20/01/1961,22/11/1963,Democratic,John_F_Kennedy.jpg,thmb_John_F_Kennedy.jpg,Massachusetts
36,Lyndon B. Johnson,http://en.wikipedia.org/wiki/Lyndon_B._Johnson,22/11/1963,20/1/1969,Democratic,Lyndon_B_Johnson.gif,thmb_Lyndon_B_Johnson.gif,Texas
37,Richard Nixon,http://en.wikipedia.org/wiki/Richard_Nixon,20/1/1969,9/8/1974,Republican,RichardNixon.gif,thmb_RichardNixon.gif,California
38,Gerald Ford,http://en.wikipedia.org/wiki/Gerald_Ford,9/8/1974,20/01/1977,Republican,Gerald_R_Ford.jpg,thmb_Gerald_R_Ford.jpg,Michigan
39,Jimmy Carter,http://en.wikipedia.org/wiki/Jimmy_Carter,20/01/1977,20/01/1981,Democratic ,James_E_Carter.gif,thmb_James_E_Carter.gif,Georgia
40,Ronald Reagan,http://en.wikipedia.org/wiki/Ronald_Reagan,20/01/1981,20/01/1989,Republican ,ReaganWH.jpg,thmb_ReaganWH.jpg,California
41,George H. W. Bush,http://en.wikipedia.org/wiki/George_H._W._Bush,20/01/1989,20/01/1993,Republican ,George_H_W_Bush.gif,thmb_George_H_W_Bush.gif,Texas
42,Bill Clinton,http://en.wikipedia.org/wiki/Bill_Clinton,20/01/1993,20/01/2001,Democratic ,Clinton.jpg,thmb_Clinton.jpg,Arkansas
43,George W. Bush,http://en.wikipedia.org/wiki/George_W._Bush,20/01/2001,20/01/2009,Republican ,George_W_Bush.jpg,thmb_George_W_Bush.jpg,Texas
44,Barack Obama,http://en.wikipedia.org/wiki/Barack_Obama,20/01/2009,Incumbent , Democratic ,Barack_Obama.jpg,thmb_Barack_Obama.jpg,Illinois"""
monthsTable = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
def removeHeader( lines ):
...
def presName( president ):
...
def reworkDate( date ):
...
def printPresidency( presidency ):
...
def printAll( presidency, name, tookOffice, leftOffice, year1, year2 ):
...
def main():
# get a list of individual lines, one president per line
lines = presidents.split( '\n' )
# remove the header
lines = removeHeader( lines )
# treat each president, one at a time
for line in lines:
# get the different fields
presidency ,president ,wikipediaEntry, tookOffice ,leftOffice ,party ,portrait, thumbnail, homeState = line.split( ',' )
# rework the president's name
name = presName( president )
tookOffice, year1 = reworkDate( tookOffice )
# same work with leftOffice, if not "Incumbent"
year2 = 0
if leftOffice.strip() != "Incumbent":
leftOffice, year2 = reworkDate( leftOffice )
printAll( presidency, name, tookOffice, leftOffice, year1, year2 )
main()