Task Discussion

Fer said:

Data types

http://pastebin.com/T6QQfmF7

on Nov. 6, 2013, 6:43 a.m.
Wouter Tebbens said:

I posted the exercises here: http://pastebin.com/Z9S2HFbj

on March 15, 2013, 1:19 p.m.
drediamond said:

Data Types

on Nov. 25, 2012, 2:04 a.m.

cstsupport said:

Greetings from Ireland. Thank you for contacting me. I am are currently out of the office and will have some access to my email. I will return your email and attend to queries as soon as I can. Warm Regards, Rosetta Talley

on Nov. 25, 2012, 2:10 a.m. in reply to drediamond
saravanan said:

Extra: Answers

farmer_count={'muthuswamy':1,'ponnuswamy':2,'sakthi':3} #dictionary

market_slogan="Best Price Best Service " #String

pro=[('rice',1),('wheat',10),('olive',20)] #list

growing_seaons=('spring', 'sumer', 'fall', 'winter') # tuple

location=['salem','trichi','madurai','theni'] #list

on Aug. 30, 2012, 1:22 p.m.
saravanan said:

Chapter 10:http://pastebin.com/iYwEAWyz completed

on Aug. 30, 2012, 12:58 p.m.
saravanan said:

chapter 9-----> http://pastebin.com/PMay9Mrk

on Aug. 25, 2012, 2 p.m.
saravanan said:

chapter 8 : http://pastebin.com/eqFxB6Zu

on Aug. 23, 2012, 3 p.m.
saravanan said:

chapter 6: http://pastebin.com/i4XSDh8g

on Aug. 21, 2012, 2:01 p.m.
Rob said:

Chapters 9 and 10: http://dpaste.com/780966/

on Aug. 3, 2012, 5:05 p.m.
Rob said:

Chapter 8: http://dpaste.com/777731/

on July 29, 2012, 8:59 p.m.
Rob said:

Chapter 6: http://dpaste.com/777224/

on July 28, 2012, 11:15 p.m.
ionut.vlasin said:

6.1 and 6.2

http://pastebin.com/iVThjh5z

6.3 - 6.6

http://pastebin.com/fqVvdXnQ

chapter 8

http://pastebin.com/aQjSBHey

chapter 9

http://pastebin.com/F10rCyZh

chapter10

http://pastebin.com/CtUhn8A5

on July 9, 2012, 10:50 a.m.
pannix said:

Exercises for chapter 5 - datatypes

Chapter 6: http://pastebin.com/DLNABpFJ

Chapter 8: http://pastebin.com/PsVhFQ84

Chapter 9: http://pastebin.com/mxmSqpVy

Chapter 10: http://pastebin.com/NM446TAa

on May 9, 2012, 11:28 a.m.
pannix said:
Bonus question:

dictionary {'John Doe': 1234, 'Jane Doe': 4567, 'Bob Redneck': 7890}

string 'Fresh Veggies'

dictionary {'potatoes': 3.59, 'apples': 5.23, 'rice': 3.66}

tuple ('Spring', 'Summer', 'Autumn', 'Winter')

dictionary {'John Doe': 'Fort Worth', 'Jane Doe': 'Corpus Christi'}
on May 9, 2012, 11:49 a.m. in reply to pannix
E.Mosso said:

how do you bypass the raw_input in Python v3.0 and higher? That version of Python using IDLE doesn't recognize raw_input. .The exercises I keep coming across assme that it does, and are using the 2.0 versions.. How do you input the commands in order to get the same results? I do not know. I also realized that you just leave out the print command when you want to print something in Python v.3 .. took me a sec to figure that out as well.

on April 15, 2012, 12:49 a.m.
Asier Iturralde Sarasola said:
In Python >3.0 the old raw_input() has been renamed to input() and print is now a function. Some examples:

Old: print "The answer is", 2*2 New: print("The answer is", 2*2) Old: print x, # Trailing comma suppresses newline New: print(x, end=" ") # Appends a space instead of a newline Old: print # Prints a newline New: print() # You must call the function! Old: print >>sys.stderr, "fatal error" New: print("fatal error", file=sys.stderr) Old: print (x, y) # prints repr((x, y)) New: print((x, y)) # Not the same as print(x, y)!
on April 15, 2012, 7:29 a.m. in reply to E.Mosso
gnuisance said:

Chapter 6 Exercises

8.1
8.2
8.3
8.4
8.5
8.6

9.1
9.2
9.3
9.4
9.5

10.1
10.2
10.3

on March 10, 2012, 3:15 p.m.
dvdjaco said:
I need to go now, will post some comments tomorrow!

6.1

6.2

6.3

6.4

6.5

8.1

8.2

8.3

8.4

8.5

8.6

9.1

9.2

9.4

9.5

10.1

10.2

10.3

Extra credit:

d = {"Joe Farmer": 55} s = "The Slogan" d = {"produce name": 5.55} seasons = ('spring', 'sumer', 'fall', 'winter') d = {"participant name": "city"}
on Feb. 18, 2012, 6:30 p.m.
dvdjaco said:
(I have a bunch of questions / comments regarding these exercises, I'll post them as replies to my answers for clarity)

8.2 Performance: does the order of these 3 lines have a potential impact in the performance of the program? I mean, which of the 3 expressions is harder to evaluate? They should be written in increasing order of complexity, so that lines that don't pass the easier test are not further analysed.

I have written them so that we first compare 2 strings, then evaluate the len() of a list and then search for a character with list.find(), but that's just a guess.

if words[0] != 'From' : continue if len(words) < 3 : continue # drop lines with less than 3 words if words[1].find('@') == -1 : continue # discard random (body) lines starting with 'From'
on Feb. 21, 2012, 6:27 a.m. in reply to dvdjaco
dvdjaco said:

8.3 Rewrite the guardian code in the above example without two if statements.
Instead use a compound logical expression using the AND logical operator with a single
if statement.

The text should say "using the OR logical operator", not "AND": if any of these expressions is true we should "continue"

on Feb. 21, 2012, 6:34 a.m. in reply to dvdjaco
dvdjaco said:
9.2 Performance again. How does (1) compare to (2) in this sense? Does (2) represent a performance improvement?

(1) for c in s: if c not in d: d[c] = 1 else: d[c] = d[c] + 1

(2) for c in s: d[c] = d.get(c,0) + 1
on Feb. 21, 2012, 6:48 a.m. in reply to dvdjaco
Ken Doman said:
Chapter 6 answers here.

Chapter 8 answers here.

Chapter 9 answers here.

Chapter 10 answers here.

Extra Credit:

Q: How can each aspect be represented in Python data types? Give an example for each.

farmer name and booth number

Farmer's name: string - "Farmer Brown"

Booth number: int - 42

market slogan

string - "Fresh produce sold here"

produce name and price

dictionary - {"corn": 1.23, "tomatoes": 0.69}

names of growing seasons ('spring', 'sumer', 'fall', 'winter')

a tuple of strings - ('spring', 'sumer', 'fall', 'winter')

cities where the farmers and participants are located (no state data necessary yet)

a list of strings - ["Kansas City", "Omaha", "Chicago"]
on Jan. 17, 2012, 1:40 p.m.
dvdjaco said:

Hi Ken,

your pastebin links give an "Unknown Paste ID!" message.

on Feb. 21, 2012, 7:04 a.m. in reply to Ken Doman
dean said:

My answers:

http://goo.gl/iYb9m

on Oct. 10, 2011, 1:19 p.m.
Mars83 said:
d = {"farmer name": 1337} s = "Your advertising could stand here!" d = {"produce name": [0.00, '€']} tp = ('spring', 'summer', 'fall', 'winter') d = {"name": "city"}

Exercise 6-1 & 6-2

Exercise 6-3

Exercise 6-4

Exercise 6-5

Exercise 6-6

Exercise 8-1

Exercise 8-2

Exercise 8-3

Exercise 8-4

Exercise 8-5

Exercise 8-6

Exercise 9-1

Exercise 9-2

Exercise 9-3

Exercise 9-4

Exercise 9-5

Exercise 10-1

Exercise 10-2

Exercise 10-3
on Oct. 9, 2011, 11:38 a.m.