Why is my iterating through a dictionary causing a TypeError when I call the value of the objective function

Question

When I run the following code:

for key,value in before_yield_ts.items():
    print(key,value)

Before this block of code:

 # The result of the objective function is here
    final_amount_ts = value (prob_ts.objective)
    print ("Total", final_amount_ts)

This is the error that I get:

Traceback (most recent call last):
  File "metal_blend.py", line 181, in <module>
    final_amount_ts = value (prob_ts.objective)
TypeError: 'float' object is not callable

Answer 1

After the code block

for key,value in before_yield_ts.items():
    print(key,value)

value is now a float number representing the last item in the dictionary. It is not changed afterwards.

In the line

final_amount_ts = value (prob_ts.objective) The parentheses after "value" are being applied as an operator on it, in other words, you are attempting to call value as if it were a function, when it is actually a float.