Tuple related (python)

Question

def cmyk_to_rgb ():
x = []

for i in range(4):
x.append(float(input()))

c,m,y,k= x

r = round(255 * (1 - c) * (1 - k))
g = round(255 * (1 - m) * (1 - k))
b = round(255 * (1 - y ) * (1 - k))

'''
result = r,g,b
return result
#the above lines returns a tuple. #example outputs (1,2,3) instead of 1,2,3'''

return str(r)+","+str(g)+","+ str(b)

print (cmyk_to_rgb())

Refer to the comment part. Since, it was returning a tuple with parentheses, I had to convert all manually to string and then add two commas in between.

Is there a way I could have returned the result in the desired format i.e. 1,2,3 without doing this ??

Answer 1

CHANDAN ROY
That print I did is just another method or alternative, it has no connection with your function.

And with your function, you can use f-strings or concatenation using + (like what you did) instead of comma because comma will generate a tuple.

(1,2,3) ---> tuple
1,2,3 ---> tuple
https://code.sololearn.com/c5aPiYyvv9To/?ref=app

Answer 2

",".join([str(x) for x in input.split()])

>> 1,2,3,4
#.join method convert lists into string with "," between elements, you can join characters whatever you want.

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OR

print(r, g, b, sep=",")

>> 1,2,3
# sep parameter in print, represents the comma that separates each variables. By dafult sep is whitespace but you can costumize or use whatever character you want.

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And the reason why it outputs tuple is because when Unpacking values and variables, the unpacked or zipped value will return Tuple.

Answer 3

《 Nicko12 》 print statement also generates None as function doesn't return anything