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COMP9021-Lab 5 Solved
1 R Most popular name
As in the fifth lecture, we use the data of the National Data on the relative frequency of given names in the population of U.S. births, stored in a subdirectory named names of the working directory, in files named yobxxxx.txt with xxxx (the year of birth) ranging from 1880 to 2013. Write a program most_popular_name.py that prompts the user for a first name, and finds out the first year when this name was most popular in terms of frequency of names being given, as a female name and as a male name.
Here is a possible interaction:
$ python3 most_popular_name.py
Enter a first name: notgivenyet
In all years, notgivenyet was never given as a female name.
In all years, notgivenyet was never given as a male name.
$ python3 most_popular_name.py
Enter a first name: Zed
In all years, Zed was never given as a female name.
In terms of frequency, Zed was the most popular as a male name first in the year 1894.
It then accounted for 0.01% of all male names
$ python3 most_popular_name.py
Enter a first name: Zilpha
In terms of frequency, Zilpha was the most popular as a female name first in the year 1888. It then accounted for 0.01% of all female names
In all years, Zilpha was never given as a male name.
$ python3 most_popular_name.py
Enter a first name: John
In terms of frequency, John was the most popular as a female name first in the year 1880.
It then accounted for 0.05% of all female names.
In terms of frequency, John was the most popular as a male name first in the year 1880.
It then accounted for 8.74% of all male names.
$ python3 most_popular_name.py
Enter a first name: Rebecca
In terms of frequency, Rebecca was the most popular as a female name first in the year 1974.
It then accounted for 1.03% of all female names.
In terms of frequency, Rebecca was the most popular as a male name first in the year 1975.
It then accounted for 0.00% of all male names.
$ python3 most_popular_name.py
Enter a first name: Charlotte
In terms of frequency, Charlotte was the most popular as a female name first in the year 2013.
It then accounted for 0.53% of all female names.
In terms of frequency, Charlotte was the most popular as a male name first in the year 1907.
It then accounted for 0.00% of all male names.
$ python3 most_popular_name.py
Enter a first name: Madison
In terms of frequency, Madison was the most popular as a female name first in the year 2001.
It then accounted for 1.23% of all female names.
In terms of frequency, Madison was the most popular as a male name first in the year 1881.
It then accounted for 0.03% of all male names.
$ python3 most_popular_name.py
Enter a first name: Peter
In terms of frequency, Peter was the most popular as a female name first in the year 1887.
It then accounted for 0.00% of all female names.
In terms of frequency, Peter was the most popular as a male name first in the year 1957.
It then accounted for 0.54% of all male names.
2 R Highest value of indicator
Here we use data available at http://datacatalog.worldbank.org on Health Nutrition and Population statistics, stored in the file HNP_Data.csv, assumed to be saved in the working directory. Write a program highest_value_for_indicator.py that prompts the user for an Indicator Name. If the indicator exists and is associated with a numerical value for some countries or categories, for some the years 1960-2015, then the program finds out the maximum value, and outputs:
• that value;
• the years when that value was reached, from oldest to more recents years;
• for each such year, the countries or categories for which that value was reached, listed in lexicographic order.
Here is a possible interaction:
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Belly explosion by excessive Coca Cola consumption Sorry, either the indicator of interest does not exist or it has no data.
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Literacy rate, youth total (% of people ages 15-24)
The maximum value is: 100
It was reached in these years, for these countries or categories:
2007: [’Azerbaijan’]
2013: [’Moldova’]
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Age population, age 12, female, interpolated
The maximum value is: 13193254
It was reached in these years, for these countries or categories: 2000: [’China’]
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Newborns protected against tetanus (%)
The maximum value is: 99
It was reached in these years, for these countries or categories:
2006: [’Bahamas, The’]
2007: [’Bahamas, The’]
2008: [’Bahamas, The’, ’Bahrain’]
2009: [’Bahamas, The’]
2010: [’Bahamas, The’]
2011: [’Bahamas, The’]
2012: [’Bahamas, The’]
2013: [’Bahamas, The’, ’Guyana’]
2014: [’Bahamas, The’, ’Guyana’]
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Female headed households (% of households with a female head)
The maximum value is: 49.4 It was reached in these years, for these countries or categories: 2007: [’Ukraine’]
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Number of neonatal deaths
The maximum value is: 5106312
It was reached in these years, for these countries or categories: 1990: [’World’]
$ python3 highest_value_for_indicator.py
Enter an Indicator Name: Age at first marriage, female
The maximum value is: 33.7 It was reached in these years, for these countries or categories:
1991: [’St. Lucia’]
3 Extracting information from a web page (optional)
Write a program SMS_titles.py that extracts titles from a front page SMH.html of the Sydney Morning Herald, also provided under the name SMH.txt, meant to be saved in the working directory. You are provided with the expected output, saved in the file SMS_titles_outputs.txt, though you might do a better job and remove some of the titles (for instance, The Lady who lives on the Moon could go...). Make sure that the output does not include any unwanted HTML entity.
For this question, you can either use the beautifulsoup package (see the program worldbank.py from the first set of notes) or regular expressions (there is a jupyter notebook sheet on regular expressions).
4 Sierpinski triangle (optional)
Write a program sierpinski_triangle.py that generates Latex code, a .tex file, that can be processed with pdflatex to create a .pdf file that depicts Sierpinski triangle, obtained from Pascal triangle by drawing a black square when the corresponding number is odd. A simple method is to use a particular case of Luca’s theorem, which states that the number of ways of choosing k objects out of n is odd iff all digits in the binary representation of k are digits in the binary representation of n. For instance:
• 53 = 10, which corresponds to a white square as 10 is even; indeed, 5 is 101 in binary, 3 is 11 in binary, and there is at least one bit set to 1 in 11 (namely, the leftmost one), which is not set to 1 in 101;
• 62 = 15, which corresponds to a black square as 15 is odd; indeed, 6 is 110 in binary, 2 is 10 in binary, and all bits (actually, the only bit) set to 1 in 10 are set to 1 in 110.
So your program has to generate a file named Sierpinski_triangle.tex, similar to the one provided; examine the contents of this file to see which text needs to be output.
The file Sierpinski_triangle.pdf is also provided, but if you want to generate it yourself from Sierpinski_triangle.tex, you need to have Tex installed on your computer (install it if that is not the case, see http://www.tug.org/texlive/), and then execute
pdflatex Sierpinski_triangle.tex
from the command line, or open Sierpinski_triangle.tex in the Latex editor that comes with your distribution of Tex, and it will just be a matter of clicking a button...
5 A calendar program (optional, advanced)
Write a program calendar.py that provides a variant on the Unix cal utility (in particular because it lets the weeks start on Monday, not Sunday), following this kind of interaction:
$ python3 calendar.py
I will display a calendar, either for a year or for a month in a year.
The earliest year should be 1753.
For the month, input at least the first three letters of the month’s name.
Input year, or year and month, or month and year: 3194 Sept September 3194
Mo Tu We Th Fr Sa Su
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30
$ python3 calendar.py
I will display a calendar, either for a year or for a month in a year.
The earliest year should be 1753.
For the month, input at least the first three letters of the month’s name.
Input year, or year and month, or month and year: dEcEm 3194 December 3194
Mo Tu We Th Fr Sa Su
1 2 3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
$ python3 calendar.py
I will display a calendar, either for a year or for a month in a year.
The earliest year should be 1753.
For the month, input at least the first three letters of the month’s name. Input year, or year and month, or month and year: 3194
3194
January February March
Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su
1 2 1 2 3 4 5 6 1 2 3 4 5 6
3 4 5 6 7 8 9 7 8 9 10 11 12 13 7 8 9 10 11 12 13
10 11 12 13 14 15 16 14 15 16 17 18 19 20 14 15 16 17 18 19 20
17 18 19 20 21 22 23 21 22 23 24 25 26 27 21 22 23 24 25 26 27
24 25 26 27 28 29 30 28 28 29 30 31
31
April May June
Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su
1 2 3 1 1 2 3 4 5
4 5 6 7 8 9 10 2 3 4 5 6 7 8 6 7 8 9 10 11 12
11 12 13 14 15 16 17 9 10 11 12 13 14 15 13 14 15 16 17 18 19
18 19 20 21 22 23 24 16 17 18 19 20 21 22 20 21 22 23 24 25 26 25 26 27 28 29 30 23 24 25 26 27 28 29 27 28 29 30
30 31
July August September
Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su
1 2 3 1 2 3 4 5 6 7 1 2 3 4
4 5 6 7 8 9 10 8 9 10 11 12 13 14 5 6 7 8 9 10 11
11 12 13 14 15 16 17 15 16 17 18 19 20 21 12 13 14 15 16 17 18
18 19 20 21 22 23 24 22 23 24 25 26 27 28 19 20 21 22 23 24 25 25 26 27 28 29 30 31 29 30 31 26 27 28 29 30
October November December
Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su
1 2 1 2 3 4 5 6 1 2 3 4
3 4 5 6 7 8 9 7 8 9 10 11 12 13 5 6 7 8 9 10 11
10 11 12 13 14 15 16 14 15 16 17 18 19 20 12 13 14 15 16 17 18
17 18 19 20 21 22 23 21 22 23 24 25 26 27 19 20 21 22 23 24 25
24 25 26 27 28 29 30 28 29 30 26 27 28 29 30 31
31
In doing this exercise, you will have to find out (or just remember...) how leap years are determined, and what is so special about the year 1753...
