[Tutor] create class Pet

[Stephanie Quiles]

You are right I don't understand functions very well still. This prompts the next question is there a book or online resource that you suggest I look at? Right now I am using a text book provides by the instructor called Starting Out With Python 3rd ed.  
Anything you can suggest I reference would be appreciated. I will review the code when I get home. 

Thanks 
Stephanie Quiles
Sent from my iPhone

> On Jun 17, 2015, at 3:40 AM, Alan Gauld <alan.gauld at btinternet.com> wrote:
> 
> On 16/06/15 21:15, Stephanie Quiles wrote:
>>> sorry this is the correct error.
> 
> 
>>   File "/Users/stephaniequiles/PycharmProjects/untitled3/pets.py", line 7, in main
>>     pet.get_name(name, animal_type, age)
>> AttributeError: 'module' object has no attribute 'get_name'
> 
> There are several errors in this line, all of which suggest
> you don't really understand what you are doing with functions, #
> classes and objects. You need to re-read your tutorial material
> more closely.
> 
> 1) Starting with the reported error.
> You called
> 
> pet.get_name(...)
> 
> pet is the name of your file so Python sees that as a module.
> But get_name is a method of your Pet class. The class name is
> captalized and case matters in Python. 'Pet' is not the
> same as 'pet' That's why it says there is no such module
> attribute as get_name.
> 
> 2) The method call has 3 arguments: name, type and age.
> But your method definition has no attributes (apart
> from the obligatory self). When you call a function
> (or method) you must only include the arguments that
> the function definition expects. So your call to
> get_name() would have failed even if you had not
> misspelled pet.
> 
> 3) get_name() returns a string value - the __name of the pet.
> You call get_name() but do not use or store the result so
> it is thrown away. I suspect you meant to print the result
> so you should have written something like:
> print ( my_pet.getname() )
> 
> 4) get_name() is a method of the class Pet. That means
> you should call it as an attribute of an object which
> is an instance of Pet. That is, you must create an
> instance of Pet before you try to use any of its methods.
> You did not create any instances. Interestingly, your
> __init__() method does take the 3 parameters that
> you tried to pass to get_name(). This means that
> you could have replaced the get_name() call with
> 
> my_pet = Pet(name, animal_type, age)
> 
> Now that we have dealt with that line lets move on
> to the rest of your main function...
> 
> You have several lines like:
> 
>     print("Pet Name: ", pet.get_name)
> 
> The problem here is that you are passing the method name
> into the print function. You are not *calling* the method.
> Also you are using the module name (pet) to access get_name,
> but it needs to be an instance of Pet - see above.
> 
> To do all that you must use abn instance and put parentheses
> after the method name, so it should look like:
> 
>     print("Pet Name: ", my_pet.get_name() )
> 
> The final set of errors have already been highlighted by Mark.
> Namely where you set attribute values in the class methods
> you are creating strings instead of using the variables.
> ie you are writing
> 
>      def set_name(self, name):
>          self.__name = "name"
> 
> where it should be
> 
>     def set_name(self, name):
>         self.__name = name
> 
> with no quote signs.
> 
> If you make all those changes I think it should work.
> However, given the number and nature of the errors, I cannot
> help but think you need to go back and re-read your
> tutorial material. Details are very important in programming
> and you seem to still be confused about naming, function definitions and calling and the relationship between classes and objects/instances.
> 
>> 
>> Process finished with exit code 1
>> 
>> class Pet:
>>     # pet class should have an __init__ method that creates these attributes.
>>     def __init__(self, name, animal_type, age):
>>         self.__name = "name"
>>         self.__animal_type = "animal_type"
>>         self.__age = "age"
>> 
>>     def set_name(self, name):
>>         self.__name = "name"
>> 
>>     def set_type(self, animal_type):
>>         self.__animal_type = animal_type
>> 
>>     def set_age(self, age):
>>         self.__age = age
>> 
>>     def get_name(self):
>>         return self.__name
>> 
>>     def get_animal_type(self):
>>         return self.__animal_type
>> 
>>     def get_age(self):
>>         return self.__age
>> 
>> # create methods,  set_name , set_animal_type, set_age,  get_name, get_animal_type
>> # get_age
>> 
>> # write a program that creates an object of the class and prompts the use to enter
>> # name, type, age of their pet.
>> 
>> # data should be stored as objects attributes.
>> # use objects accessor methods to retrieve the pet's name, type and age
>> # display data on screen
>> 
>> # __author__ = 'stephaniequiles'
>> import pet
>> def main():
>>     name = input("what is the name of the pet?: ")
>>     animal_type = input("Please enter a type of pet: ")
>>     age = input("Enter age of pet: ")
>>     pet.get_name(name, animal_type, age)
>>     print("This will be saved to file.")
>>     print("Here is a the data you entered: ")
>>     print("Pet Name: ", pet.get_name)
>>     print("Animal Type:", pet.get_animal_type)
>>     print("Age: ", pet.get_age)
>> 
>> 
>> main()
> 
> -- 
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
> http://www.amazon.com/author/alan_gauld
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> 
> 
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