Trying to Print values but getting memory location instead

Question

I have a function below which I want to output lines of values relating to \'O\', instead it prints the location of these values, how do I amend this? allReactions is an empty a

Answer 1

You are trying to print a list of Reaction objects. By default, python prints a class object's ID because it really doesn't have much to say about it. If you have control over the class definition, you can change that by adding __str__ and __repr__ method to the class.

>>> class C(object):
...     pass
... 
>>> print C()
<__main__.C object at 0x7fbe3af3f9d0>

>>> class C(object):
...     def __str__(self):
...             return "A C Object"
... 
>>> print C()
A C Object
>>>                                                                                         

If you don't have control of the class... well, the author didn't implement a pretty view of the class. You could create subclasses with the methods or write a function to pull out the stuff you want.