[Tutor] writing files using modules and functions

2012-11-12 Thread Rufino Beniga
def MatInv(arr,file): f = open('file.txt','w') f.write(arr) f.close() So I'm trying to write a module that will take a matrix (arr) and write it to a text file. The above module is called MatrixIO.py #first I import it import MatrixIO #Then i call the function MatInv with matrix(a)

Re: [Tutor] functions and iterations

2012-11-12 Thread xDog Walker
On Monday 2012 November 12 21:07, you wrote: > I tried it with i == n as well and it still doesnt work :/ Check the documentation on range and xrange and you will find out why i never equals n. >>> n = 5 >>> range(n) [0, 1, 2, 3, 4] >>> for i in xrange(n): print i ... 0 1 2 3 4 >>> -- Yonder no

Re: [Tutor] functions and iterations

2012-11-12 Thread xDog Walker
On Monday 2012 November 12 19:56, Rufino Beniga wrote: > def IterateLogistic(x,r,n): >     for i in xrange(n): >         x = r*(1-x) >         if i = n: >             print x > > I want this function to take in x and r which can be any two real numbers > and after a certain number of iterations (n)

[Tutor] functions and iterations

2012-11-12 Thread Rufino Beniga
def IterateLogistic(x,r,n): for i in xrange(n): x = r*(1-x) if i = n: print x I want this function to take in x and r which can be any two real numbers and after a certain number of iterations (n), the function should print the current state which is x. I tried this

Re: [Tutor] Questions about classes

2012-11-12 Thread R. Alan Monroe
> 2. Why use a class in the first place? What is the purpose of > constructing a class instead of just writing a program with a bunch > of functions? Sometimes, you DO just write programs with functions. A class can be useful if you have a bunch of a thing. Like a monster. Each monster can know

Re: [Tutor] Questions about classes

2012-11-12 Thread Mark Lawrence
On 13/11/2012 02:49, brandon w wrote: I have been trying to understand classes. I have been studying from a book I picked up recently. I have two questions about them. 1. I saw in the book an assignment written like this: class HumanBeing: def makeName(self, name): *

[Tutor] Questions about classes

2012-11-12 Thread brandon w
I have been trying to understand classes. I have been studying from a book I picked up recently. I have two questions about them. 1. I saw in the book an assignment written like this: class HumanBeing: def makeName(self, name): *self.name = name* * * Why is it not writte

[Tutor] correctly encoding of BeautifulSoup content

2012-11-12 Thread Norman Khine
hello, i have this piece of code (http://pastie.org/5366200) which uses BeatifulSoup to scrape content from a site, the html for the example can be seen here http://pastie.org/5366172 short_description = soup.find('div', attrs={"class": "short-description"}) if short

Re: [Tutor] Adding items from a cursor to a dict?

2012-11-12 Thread Timo
Op 12-11-12 09:29, Khalid Al-Ghamdi schreef: Hi all, How would you go about adding items from a cursor to a dictionary? There is a nice buitin way, with example here: http://docs.python.org/2/library/sqlite3.html#sqlite3.Row It's not a real dictionary though, but it can act like it. Also, the

Re: [Tutor] Adding items from a cursor to a dict?

2012-11-12 Thread Alan Gauld
On 12/11/12 08:29, Khalid Al-Ghamdi wrote: Hi all, How would you go about adding items from a cursor to a dictionary? i tried this but to no avail: >>> cur.execute('select * from schedule limit 10') >>> for i in range(len(cur.fetchall())): d[i]=cur.fetchall()[i] The second fetchall() won'

[Tutor] Adding items from a cursor to a dict?

2012-11-12 Thread Khalid Al-Ghamdi
Hi all, How would you go about adding items from a cursor to a dictionary? i tried this but to no avail: >>> cur.execute('select * from schedule limit 10') >>> for i in range(len(cur.fetchall())): d[i]=cur.fetchall()[i] Traceback (most recent call last): File "", line 2, in d[i]=cur.fetc