Can someone show me how to code this correctly please On Wed, Jun 22, 2011 at 10:00 PM, <tutor-requ...@python.org> wrote:
> Send Tutor mailing list submissions to > tutor@python.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://mail.python.org/mailman/listinfo/tutor > or, via email, send a message with subject or body 'help' to > tutor-requ...@python.org > > You can reach the person managing the list at > tutor-ow...@python.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Tutor digest..." > > > Today's Topics: > > 1. Re: Class methods (Alan Gauld) > 2. Re: sftp get single file (Peter Lavelle) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 22 Jun 2011 08:58:03 +0100 > From: "Alan Gauld" <alan.ga...@btinternet.com> > To: tutor@python.org > Subject: Re: [Tutor] Class methods > Message-ID: <its7af$h8k$1...@dough.gmane.org> > Content-Type: text/plain; format=flowed; charset="UTF-8"; > reply-type=original > > "David Merrick" <merrick...@gmail.com> wrote > > > class Critter(object): > > > > def __init__(self, name, hunger = 0, boredom = 0): > > def __pass_time(self): > > def __str__(self): > > @property > > def mood(self): > > def talk(self): > > def eat(self): > > def play(self): > > > > class Farm(Critter): > > I still don't think a Farm is a type of Critter... > > > def __init__(self,farmlet): > > Critter.__init__(self,farmlet) > > This will set the name to farmlet, which I don't > think you want. > > > def talk(self,farmlet): > > You don't need to pass farmlet in since the > class has farmlet stored inside it. > You can access farmlet with self.farmlet. > > > for critter in farmlet: > > print("Hello") > > Critter.talk(farmlet) > > You want the instance to talk not the class. > So you need to use critter.talk() And the talk > method does not take any arguments except > self. What you are doing here is calling the > class method with an instance value of farmlet. > ie self in that method gets the value of farmlet. > > > def main(): > > crit1 = Critter("Sweetie") > > crit2 = Critter("Dave") > > farmlet = [crit1,crit2] > > f = Farm(farmlet) > > > > choice = None > > while choice != "0": > > print \ > > (""" > > Critter Caretaker > > > > 0 - Quit > > 1 - Listen to your critter > > 2 - Feed your critter > > 3 - Play with your critter > > """) > > > > choice = input("Choice: ") > > print() > > > > # exit > > if choice == "0": > > print("Good-bye.") > > > > # listen to your critter > > elif choice == "1": > > f.talk(farmlet) > > > > # feed your critter > > elif choice == "2": > > f.eat(farmlet) > > Note that f.eat is a method you inherit from Critter. > The Critter method does not take any arguments > so this will fail. > > > # play with your critter > > elif choice == "3": > > f.play(farmlet) > > Same with f.play() > > > Traceback (most recent call last): > > File "D:/David/Python/programs/critter_farm3.py", line 72, in talk > > Critter.talk(farmlet) > > File "D:/David/Python/programs/critter_farm3.py", line 38, in talk > > print("I'm", self.name, "and I feel", self.mood, "now.\n") > > AttributeError: 'list' object has no attribute 'name' > > This is because you are accessing the method via > the class and passing farmlet as the instance value > rather than sending the message to the innstance > directly. Use > > critter.talk() # and no farmlet needed! > > HTH, > > > -- > Alan Gauld > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > > > > ------------------------------ > > Message: 2 > Date: Wed, 22 Jun 2011 10:07:53 +0100 > From: Peter Lavelle <li...@solderintheveins.co.uk> > To: tutor@python.org > Subject: Re: [Tutor] sftp get single file > Message-ID: <4e01b0e9.8000...@solderintheveins.co.uk> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > You could use the subprocess module to run the relevant system commands. > More info on running sftp non-interactively (i.e from a script) can be > found here: http://fixunix.com/ssh/238284-non-interactive-sftp-put.html > > Regards > > Peter Lavelle > > > ------------------------------ > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > > End of Tutor Digest, Vol 88, Issue 89 > ************************************* > -- Dave Merrick merrick...@gmail.com Ph 03 3423 121 Cell 027 3089 169
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