Area calculator

Question

Why does this keep resulting in an error

Traceback (most recent call last):
File "file0.py", line 23, in <module>
circle()
File "file0.py", line 18, in circle
radius = diameter / 2
TypeError: unsupported operand type(s) for /: 'str' and 'int'

https://code.sololearn.com/czfdRe3Dz929/?ref=app

Answer 1

input() accept as string type value.
Convert to needed type as:

diameter = int(input ())

float( input()) # to float type conversion. so you need diameter as float type or int type.

edit:
choice == "Circle" or "circle": will always returns true. the proper way is to use =>

if choice == "Circle" or choice == "circle" :

similarly others. you can also do as

if choice in [ "Circle", "circle" ] :

Answer 2

# you didn't use type casting strings to integer or str to int try this one, it will work perfectly.

print('''
Press (1) to calculate Triangle
Press (2) to calculate Rectangle)
Press (3) to calculate Circle)
''')
choice = int(input('Enter your choice between (1-3): ')) # type cast string input to integer

def triangle():
print('You chose to calculate triangle area ')
base = int(input('Enter base: ')) # type cast string input to integer
height = int(input('Enter height: '))
area = 0.5 * base * height
print("Area = " + str(area)) # type cast area is an integer need to convert it to string

def rectangle():
print('You chose to calculate rectangle area ')
length = int(input('Enter length: '))
width = int(input('Enter width: '))
area = length * width
print("Area = " ,area) # or use , if u want to avoid type cast

def circle():
print('You chose to calculate circle area ')
diameter = int(input('Enter diameter: '))
radius = diameter / 2
area = str(3.14 * radius * radius)
print("Area = " ,area)

if choice == 1:
triangle()

elif choice == 2:
rectangle()

elif choice == 3:
circle()