Why is my class undefined?

[alister]

On Wed, 16 Aug 2017 18:02:48 -0700, Sayth Renshaw wrote:

> On Thursday, 17 August 2017 09:03:59 UTC+10, Ian  wrote:
>  wrote:
>> > Morning
>> >
>> > I haven't ventured into classes much before. When trying to follow
>> > some examples and create my own classes in a jupyter notebook I
>> > receive an error that the class is undefined.
>> >
>> > So I created for practise a frog class
>> >
>> > class frog(object):
>> >
>> >     def __init__(self, ftype, word):
>> >         self.ftype = ftype self.word = ftype
>> >
>> >     def jump(self):
>> >         """
>> >         Make frog jump """
>> >         return "I am jumping"
>> >
>> >     if __name__ == "__main__":
>> >         tree_frog = frog("Tree Frog", "Ribbitt")
>> >         print(frog.ftype)
>> >         print(frog.word)
>> >
>> >
>> > I receive this error
>> >
>> > NameError                                 Traceback (most recent call
>> > last)
>> > <ipython-input-1-609567219688> in <module>()
>> > ----> 1 class frog(object):
>> >       2
>> >       3     def __init__(self, ftype, word):
>> >       4         self.ftype = ftype 5         self.word = ftype
>> >
>> > <ipython-input-1-609567219688> in frog()
>> >      12 13     if __name__ == "__main__":
>> > ---> 14         tree_frog = frog("Tree Frog", "Ribbitt")
>> >      15         print(frog.ftype)
>> >      16         print(frog.word)
>> >
>> > NameError: name 'frog' is not defined
>> >
>> > what exactly am I doing wrong?
>> 
>> The if __name__ == "__main__" block is inside the class declaration
>> block, so at the point that it runs the class has not been created yet.
>> Try removing the indentation to place it after the class block instead.
> 
> Thank you that had me bugged I just couldn't see it.
> 
> Cheers
> 
> Sayth

I think you shod also print tree_frog.type not frog.type
you create the object tree_frog which is of type frog.

Although not a fault it is also recommended that classes have a capital 
first letter to make them more visible*

* this is imply style guidance & not compulsory see pep8 for more detail 
when you feel ready for it.




-- 
<Crow-> who gives a shit about US law
<jim> anyone living in the US.