How to remove parenthesis from output python

Question

So I have a function that keeps spitting out:

(10.3,11.4) 

when it should be spitting out:

10.3 11.4 

I played around and wrote a simple python code and I seem to understand the concept

a=3
b=3
print a,b #returns 3 3

but it is not working for the function below, so I am wondering why it keeps returning the ()

import math

x=10.01
y=9.01

def d():
    b = 2.00 *  x / math.sqrt(7)
    q=round(y-b,2)
    r=round(y+b,2)
    return q,r

print d() #returns (1.4399999999999999, 16.579999999999998)

Answer 1

The reason is in the statement "return q, r"

You cannot return multiple values from a function. What python is doing is creating a tuple with q and r, and returning that, as return q, r is interpreted as return (q, r) Then print takes that and outputs a tuple. So it is really equivelent to print (q, r)

However, print q, r is executed differently, as a multi-argument print and will print all arguments with spaces in between.

Hope this clears up any confusion.

Answer 2

From the official documentation;

• The return statement leaves the current function call with the expression list.
• An expression list containing at least one comma yields a tuple.

So returning multiple values from a function like you do here returns them in a tuple by definition.

Try explicitly unpacking the tuple returned by d():

In [1]: import math

In [2]: x=10.01

In [3]: y=9.01

In [4]: def d():
   ...:         b = 2.00 *  x / math.sqrt(7)
   ...:         q=round(y-b,2)
   ...:         r=round(y+b,2)
   ...:         return q,r
   ...: 

In [5]: a, b = d()

In [6]: print a, b
1.44 16.58

Answer 3

math.sqrt return a complex number with a real and an imaginary part. Change it into math.sqrt(7).real and the complex number is a real number only. This make the print do as you expect