如何在 Python 中抑制 output？

Question

My assignment has 3 values in the defined function and those 3 values are Reactors. One condition in the assignment states that " Do not display information about mixing time if a given reactor is not used in production (eg if x3=0 the message about the third reactor will not be displayed)."

def Report2(x1,x2,x3):
    if x1==0:
       return None
    if x2==0:
       return None
    if x3==0:
       return None
    y=mixing(x1)+mixing(x2)+mixing(x3)
        return y

this is my code as of the moment, the problem is that whenever i assign the values (0,0,0) and print I get the word None. What I want is for nothing to be displayed instead.

Thank you

Answer 1

Store the result and print in a conditional.

result = Report2(0,0,0)
if result:
    # will not execute if result == None
    print(result)

Answer 2

You just need to use condition after the function executed:

def Report2(x1,x2,x3):
    if x1==0 or x2==0 or x3==0:
        return None
    y=mixing(x1)+mixing(x2)+mixing(x3)
    return y

result = Report2(0,0,0)
if result:
    print(result)