Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Chuck 
Hi all, I cannot figure why I keep getting this error.  It is my understanding 
that all methods need a self argument when designing a class.  Here is my code:

import random

class ElementsQuiz:

elements = {'H' : 'Hydrogen',
'He' : 'Helium',
'Li' : 'Lithium',
'Be' : 'Beryllium',
'B' : 'Boron',
'C' : 'Carbon',
'N' : 'Nitrogen',
'O' : 'Oxygen',
'F' : 'Fluorine',
'Ne' : 'Neon',
'Na' : 'Sodium',
'Mg' : 'Magnesium',
'Al' : 'Aluminium',
'Si' : 'Silicon',
'P' : 'Phosphorus',
'S' : 'Sulfur',
'Cl' : 'Chlorine',
'Ar' : 'Argon',
'K' : 'Potassium',
'Ca' : 'Calcium',
'Sc' : 'Scandium',
'Ti' : 'Titanium',
'V' : 'Vanadium',
'Cr' : 'Chromium',
'Mn' : 'Manganese',
'Fe' : 'Iron',
'Co' : 'Cobalt',
'Ni' : 'Nickel',
'Cu' : 'Copper',
'Zn' : 'Zinc',
'Ga' : 'Gallium',
'Ge' : 'Germanium',
'As' : 'Arsenic',
'Se' : 'Selenium',
'Br' : 'Bromine',
'Kr' : 'Krypton',
'Rb' : 'Rubidium',
'Sr' : 'Strontium',
'Y' : 'Yttrium',
'Zr' : 'Zirconium',
'Nb' : 'Niobium',
'Mo' : 'Molybdenum',
'Tc' : 'Technetium',
'Ru' : 'Ruthenium',
'Rh' : 'Rhodium',
'Pd' : 'Palladium',
'Ag' : 'Silver',
'Cd' : 'Cadmium',
'In' : 'Indium',
'Sn' : 'Tin',
'Sb' : 'Antimony',
'Te' : 'Tellurium',
'I' : 'Iodine',
'Xe' : 'Xenon',
'Cs' : 'Caesium',
'Ba' : 'Barium',
'La' : 'Lanthanum',
'Ce' : 'Cerium',
'Pr' : 'Praseodymium',
'Nd' : 'Neodymium',
'Pm' : 'Promethium',
'Sm' : 'Samarium',
'Eu' : 'Europium',
'Gd' : 'Gadolinium',
'Tb' : 'Terbium',
'Dy' : 'Dysprosium',
'Ho' : 'Holmium',
'Er' : 'Erbium',
'Tm' : 'Thulium',
'Yb' : 'Ytterbium',
'Lu' : 'Lutetium',
'Hf' : 'Hafnium',
'Ta' : 'Tantalum',
'W' : 'Tungsten',
'Re' : 'Rhenium',
'Os' : 'Osmium',
'Ir' : 'Iridium',
'Pt' : 'Platinum',
'Au' : 'Gold',
'Hg' : 'Mercury',
'Tl' : 'Thallium',
'Pb' : 'Lead',
'Bi' : 'Bismuth',
'Po' : 'Polonium',
'At' : 'Astatine',
'Rn' : 'Radon',
'Fr' : 'Francium',
'Ra' : 'Radium',
'Ac' : 'Actinium',
'Th' : 'Thorium',
'Pa' : 'Protactinium',
'U' : 'Uranium',
'Np' : 'Neptunium',
'Pu' : 'Plutonium',
'Am' : 'Americium',
'Cm' : 'Curium',
'Bk' : 'Berkelium',
'Cf' : 'Californium',
'Es' : 'Einsteinium',
'Fm' : 'Fermium',
'Md' : 'Mendelevium',
'No' : 'Nobelium',
'Lr' : 'Lawrencium',
'Rf' : 'Rutherfordium',
'Db' : 'Dubnium',
'Sg' : 'Seaborgium',
'Bh' : 'Bohrium',
'Hs' : 'Hassium',
'Mt' : 'Meitnerium',
'Ds' : 'Darmstadtium',
'Rg' : 'Roentgenium',
'Cn' : 'Copernicium',
'Uut' : 'Ununtrium',
'Fl' : 'Flerovium',
'Uup' : 'Ununpentium',
'Lv' : 'Livermorium',
'Uus' : 'Ununseptium',
'Uuo' : 'Ununoctium'
}
   
def __init__(self):
self.quiz()

def quiz(self):
self.reply = ('Moron', 'Dummy', 'Idiot', 'Embecile', 'Half-wit')
self.numCorrect = 0
self.question = random.choice(self.elements.keys())
print self.question
self.ans = raw_input('Answer: ')

if self.ans == self.elements(self.question):
self.numCorrect += 1
else:
self.insult = random.choice(self.reply)
print 'Incorrect %s' % self.insult



if __name__ == '__main__':

quiz()



Thanks for any help!  
--

Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Pedro Kroger 

On Aug 10, 2012, at 3:52 PM, Chuck galois...@gmail.com wrote:

if __name__ == '__main__':
 
quiz()
 
 

You need to instantiate your class:

foo = ElementsQuiz()
foo.quiz()


Pedro
-
http://pedrokroger.net
http://musicforgeeksandnerds.com

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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Chuck 
On Friday, August 10, 2012 2:05:36 PM UTC-5, Pedro Kroger wrote:
 On Aug 10, 2012, at 3:52 PM, Chuck galois...@gmail.com wrote:
 
 
 
 if __name__ == '__main__':
 
  
 
 quiz()
 
  
 
  
 
 
 
 You need to instantiate your class:
 
 
 
 foo = ElementsQuiz()
 
 foo.quiz()
 
 
 
 
 
 Pedro
 
 -
 
 http://pedrokroger.net
 
 http://musicforgeeksandnerds.com

That doesn't work either for some reason.  I keep getting NameError: name 
'ElementsQuiz' is not defined
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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Dave Angel 
On 08/10/2012 02:52 PM, Chuck wrote:
 Hi all, I cannot figure why I keep getting this error.  It is my 
 understanding that all methods need a self argument when designing a class.  
 Here is my code:
It'd be much more useful if you'd actually quote the entire error.
 import random

 class ElementsQuiz:

 elements = {'H' : 'Hydrogen',
 'He' : 'Helium',
 'Li' : 'Lithium',
 'Be' : 'Beryllium',
 'B' : 'Boron',
 'C' : 'Carbon',
 'N' : 'Nitrogen',
 'O' : 'Oxygen',
 'F' : 'Fluorine',
 'Ne' : 'Neon',
 'Na' : 'Sodium',
 'Mg' : 'Magnesium',
 'Al' : 'Aluminium',
 'Si' : 'Silicon',
 'P' : 'Phosphorus',
 'S' : 'Sulfur',
 'Cl' : 'Chlorine',
 'Ar' : 'Argon',
 'K' : 'Potassium',
 'Ca' : 'Calcium',
 'Sc' : 'Scandium',
 'Ti' : 'Titanium',
 'V' : 'Vanadium',
 'Cr' : 'Chromium',
 'Mn' : 'Manganese',
 'Fe' : 'Iron',
 'Co' : 'Cobalt',
 'Ni' : 'Nickel',
 'Cu' : 'Copper',
 'Zn' : 'Zinc',
 'Ga' : 'Gallium',
 'Ge' : 'Germanium',
 'As' : 'Arsenic',
 'Se' : 'Selenium',
 'Br' : 'Bromine',
 'Kr' : 'Krypton',
 'Rb' : 'Rubidium',
 'Sr' : 'Strontium',
 'Y' : 'Yttrium',
 'Zr' : 'Zirconium',
 'Nb' : 'Niobium',
 'Mo' : 'Molybdenum',
 'Tc' : 'Technetium',
 'Ru' : 'Ruthenium',
 'Rh' : 'Rhodium',
 'Pd' : 'Palladium',
 'Ag' : 'Silver',
 'Cd' : 'Cadmium',
 'In' : 'Indium',
 'Sn' : 'Tin',
 'Sb' : 'Antimony',
 'Te' : 'Tellurium',
 'I' : 'Iodine',
 'Xe' : 'Xenon',
 'Cs' : 'Caesium',
 'Ba' : 'Barium',
 'La' : 'Lanthanum',
 'Ce' : 'Cerium',
 'Pr' : 'Praseodymium',
 'Nd' : 'Neodymium',
 'Pm' : 'Promethium',
 'Sm' : 'Samarium',
 'Eu' : 'Europium',
 'Gd' : 'Gadolinium',
 'Tb' : 'Terbium',
 'Dy' : 'Dysprosium',
 'Ho' : 'Holmium',
 'Er' : 'Erbium',
 'Tm' : 'Thulium',
 'Yb' : 'Ytterbium',
 'Lu' : 'Lutetium',
 'Hf' : 'Hafnium',
 'Ta' : 'Tantalum',
 'W' : 'Tungsten',
 'Re' : 'Rhenium',
 'Os' : 'Osmium',
 'Ir' : 'Iridium',
 'Pt' : 'Platinum',
 'Au' : 'Gold',
 'Hg' : 'Mercury',
 'Tl' : 'Thallium',
 'Pb' : 'Lead',
 'Bi' : 'Bismuth',
 'Po' : 'Polonium',
 'At' : 'Astatine',
 'Rn' : 'Radon',
 'Fr' : 'Francium',
 'Ra' : 'Radium',
 'Ac' : 'Actinium',
 'Th' : 'Thorium',
 'Pa' : 'Protactinium',
 'U' : 'Uranium',
 'Np' : 'Neptunium',
 'Pu' : 'Plutonium',
 'Am' : 'Americium',
 'Cm' : 'Curium',
 'Bk' : 'Berkelium',
 'Cf' : 'Californium',
 'Es' : 'Einsteinium',
 'Fm' : 'Fermium',
 'Md' : 'Mendelevium',
 'No' : 'Nobelium',
 'Lr' : 'Lawrencium',
 'Rf' : 'Rutherfordium',
 'Db' : 'Dubnium',
 'Sg' : 'Seaborgium',
 'Bh' : 'Bohrium',
 'Hs' : 'Hassium',
 'Mt' : 'Meitnerium',
 'Ds' : 'Darmstadtium',
 'Rg' : 'Roentgenium',
 'Cn' : 'Copernicium',
 'Uut' : 'Ununtrium',
 'Fl' : 'Flerovium',
 'Uup' : 'Ununpentium',
 'Lv' : 'Livermorium',
 'Uus' : 'Ununseptium',
 'Uuo' : 'Ununoctium'
 }

 def __init__(self):
 self.quiz()
Why would you do all the work from a call inside the initializer? 
What's the point of having instance attributes if you're not going to
use it a second time?
 def quiz(self):
 self.reply = ('Moron', 'Dummy', 'Idiot', 'Embecile', 'Half-wit')
 self.numCorrect = 0
 self.question = random.choice(self.elements.keys())
 print self.question

Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Terry Reedy 

On 8/10/2012 2:52 PM, Chuck wrote:

Hi all, I cannot figure why I keep getting this error.


To supplement Dave's answer (post entire traceback, dedent last two 
lines), here are the essentials of your code that show the problem.


 class C:
def f(self): pass
f()

Traceback (most recent call last):
  File pyshell#17, line 1, in module
class C:
  File pyshell#17, line 3, in C
f()
TypeError: f() missing 1 required positional argument: 'self'

You problem is that you are calling the function during the execution of 
the class statement, *before* the class is created.

Rather unusual ;-).

--
Terry Jan Reedy

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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Chuck 
Thanks for the help guys!  I finally got it working.  Shouldn't I technically 
call quiz() through the constructor, though?  Otherwise, the constructor is 
pointless.  I just put in pass for now.  (Also, I always thought that if 
__name__ == '__main__': went IN the class.  Why wouldn't it be apart of the 
class?  )

Thanks again!
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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Dave Angel 
On 08/10/2012 04:28 PM, Chuck wrote:
 Thanks for the help guys!  I finally got it working.  Shouldn't I technically 
 call quiz() through the constructor, though?  Otherwise, the constructor is 
 pointless.

 
 Thanks again!
 

What language did you use before trying Python?  Was it java, by any
chance, where everything has to be in a class?  If you're going to do
everything from the constructor, then why on earth would you make it a
class?

(Incidentally, __init__() is the initializer, not the constructor, which
is called __new__() )

If you want to make a proper class out of it, you'd move the
initalization code into the __init__(), call, the stuff that only needs
to be called once per instance.  On the other hand, you have a class
attribute 'elements, which gets initialized outside of any mmthod.  And
everything else is just locals.

  I just put in pass for now.  (Also, I always thought that
 if __name__ == '__main__': went IN the class.  Why wouldn't
 it be apart of the class?  )

Seems like you're arguing both sides.  Anyway, the if __name__ stuff
does not belong inside any class.  This is Python.

-- 

DaveA
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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Chuck 
Yeah, I am mostly a Java guy.  Just starting with Python.  :)
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Re: Keep getting this in PyDev TypeError: quiz() takes exactly 1 argument (0 given)

2012-08-10 Thread Larry Hudson 

On 08/10/2012 01:28 PM, Chuck wrote:

Thanks for the help guys!  I finally got it working.  Shouldn't I technically 
call quiz() through the constructor, though?  Otherwise, the constructor is 
pointless.  I just put in pass for now.


For this particular example, frankly, a class doesn't make sense.  Just write it as a set of 
independent functions.  A class would make more sense if you wanted to make this a generic Quiz 
class, then you could change the actual quiz simply by passing an appropriate dictionary to it 
when it's instantiated.  But even that could be done with simple functions as well.



(Also, I always thought that if __name__ == '__main__': went IN the class.  Why 
wouldn't it be apart of the class?  )


No way!  That's nonsense also.  You need to go through some introductory tutorials.  Just keep 
in mind that Python and Java are VERY different languages.  (I don't know Java myself, my 
(hobby) programming background has been with C, and I'm still just starting to learn Python, too.)




Thanks again!



 -=- Larry -=-

PS.  On another subject...  You need to check your newsreader -- all your responses have been 
double-posted.


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