Re: Beginning Python Tutorial (Part 10)

crystalattice · #1 10-Mar-2007, 16:15

I just posted a GID Community blog entitled: Beginning Python Tutorial (Part 10).

Quote:

Welcome back

Well, it's been quite some time since my last Python tutorial. I got sidetracked by actually trying to make some programs using Python. Some worked well, some not so well. But I learned from my mistakes and have a better grasp of how to use Python. read more...

Please let me know what you think.

This is an auto-generated message posted by GIDNetwork™ on behalf of the author.

crystalattice · #2 10-Mar-2007, 20:08

Hmm, looks like there's something wrong w/ the indenting mechanism in the second paragraph.

admin · #3 10-Mar-2007, 20:52

In one paragraph, you wrote:

Quote:

You can also use keyword arguments, which match arguments based on a corresponding keyword. This way, you don't have to worry about the order they are given.

What does that mean? Can we have an example?

crystalattice · #4 10-Mar-2007, 23:40

Oops, I was going to come back to that but forgot.

Keyword arguments are similar to default arguments, wherein a default value is assigned to each keyword. The function can use either the default value for the keyword or a new value can be assigned using the standard keyword = value. Using keyword arguments eliminates the need to match a value to an argument's position, like the normal default values do.

Here's an example from the book Python How to Program:

Python Code:

def generateWebsite(name, url = "www.deitel.com", Flash = "no", CGI = "yes"):
    print "Generating site requested by", name, "using url", url
    if Flash == "yes":
        print "Flash is enable"
    if CGI == "yes":
        print "CGI scripts are enabled"

generateWebsite("Deitel")    #corresponds to 'name'

generateWebsite("Deitel", Flash = "yes", url = "www.deitel.com/new")

generateWebsite(CGI = "no", name = "Prentice Hall")

So, use keyword arguments when you want to pass in values but don't know what the argument's position is in the function definition. If you know the positions will be matched, you can just pass arguments in sequential order.

crystalattice · #5 10-Mar-2007, 23:48

Quote:

Originally Posted by crystalattice

Hmm, looks like there's something wrong w/ the indenting mechanism in the second paragraph.

Never mind. It's just a browser issue.

admin · #6 11-Mar-2007, 01:19

I get it now. Thank you

I think this keyword arguments thingy is so cool. This is the first time I am seeing something like this.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Rate This Thread
Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Re: Beginning Python Tutorial (Part 9)	crystalattice	Python Forum	0	19-Feb-2006 01:04
Re: Beginning Python Tutorial (Part 6)	crystalattice	Python Forum	0	05-Oct-2005 18:48
Re: Beginning Python Tutorial (Part 5)	crystalattice	Python Forum	0	04-Oct-2005 04:27
Re: Beginning Python Tutorial (Part 2)	crystalattice	Python Forum	2	31-Jul-2005 12:25