How do I concatenate a float or a interger?

Question

I'm a very beginner and know only the very basic syntax. I am trying to make a circumference calculator, with the user inputting the radius. This is what I have right now, but I want to be able to have a text answer like "The circumference of this circle is ____". Right now I can only output the answer.

rad = input("Enter the radius of circle: ")
radius = float(rad)
circumference = 2 * 3.14 * radius
print(circumference)

Aviv Yaniv · Answer 1 · 2020-09-07T18:43:37.930

2

Python 3

Use f-string to format result:

rad = input("Enter the radius of circle: ")
radius = float(rad)
circumference = 2 * 3.14 * radius
print(f'The circumference of this circle is {circumference}')

Python 2

Format string:

rad = input("Enter the radius of circle: ")
radius = float(rad)
circumference = 2 * 3.14 * radius
print('The circumference of this circle is {0}'.format(circumference))

Another Option: Concatenating String Directly

Less elegant, yet still works:

rad = input("Enter the radius of circle: ")
radius = float(rad)
circumference = 2 * 3.14 * radius
print('The circumference of this circle is ' + str(circumference))

edited Sep 07 '20 at 18:43

answered Sep 07 '20 at 18:35

Aviv Yaniv

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Alternatively you could just do `"..." + str(circumference)`, but that would be certainly less elegant. – flakes Sep 07 '20 at 18:38
1

Indeed @flakes Thank you :) – Aviv Yaniv Sep 07 '20 at 18:44

score 1 · Answer 2 · answered Sep 07 '20 at 18:36

1

You can use

print(f"The circumference of this circle is {circumference}")

But also you do not want to use 3.14 for pi. You can do

import math

and then use math.pi for a more accurate number.

answered Sep 07 '20 at 18:36

Yaga

56
2

How do I concatenate a float or a interger?

2 Answers2