Multiple lines?

[Noobie12]

Hello, everyone. I'm fairly new to coding and in a bit of a jam. I'm trying to type out this example i saw online on IDLE and it reads something like this.

1 2 3 4

1 response = input("What is your radius? ") 2 r = float(response) 3 area = 3.14159 * r ** 2 4 print("The area is ", area)

But MY code stops at the 2nd line.

1 2	>>> response = input("What is your radius?") What is your radius?

What am I doing wrong or how do i get my code to look something like the example? And how come I can't code offline? Any help is greatly appreciated.

[Larz60+]

the code will break on line 2
if response contains anything other than a number,
including an empty line.
you can use:

1 2 3 4 5

while True:     response = input("What is your radius? ")     if response.isdigit():         break     print('Please enter a number')

[Noobie12]

the code will break on line 2
if response contains anything other than a number,
including an empty line.
you can use:

1 2 3 4 5

while True:     response = input("What is your radius? ")     if response.isdigit():         break     print('Please enter a number')

How did you get it to go to the next line without executing the first line? the first code i posted is supposed to work but i cant go to the next line. I'm not sure if im making any sense. What are you using to code? If you copy and paste the first code

1 2 3 4

response = input("What is your radius? ") r = float(response) area = 3.14159 * r ** 2 print("The area is ", area)

and press enter. It works fine. I just cant get to the next line in IDLE. If i type

1 2 3 4 5 6 7

>>> response = ("What is your radius? ") >>> r = float(response) Traceback (most recent call last):   File "<pyshell#1>", line 1, in <module>     r = float(response) ValueError: could not convert string to float: 'What is your radius? ' >>>

I get that error. I'm not sure what im doing wrong and why the first code from the example online works and i cant type it out on IDLE like the example.

[Larz60+]

and press enter. It works fine. I just cant get to the next line in IDLE. If i type

Not if you input text, it will still crash
the way I wrote it:

1	while True:

this starts an endless loop. It says execute all following indented code, forever.
the input statement is the same:

1	response = input("What is your radius? ")

nothing special here.

the next line:

1 2	if response.isdigit():     break

says 'If the value i response is numeric, I've got what I want, so break the endless loop'
and does just that.

If it is not numeric, it continues on to the next line, printing the message

1	print('Please enter a number')

And restarts the loop

[buran]

Compare

1	response = input("What is your radius? ")

with

1	response = ("What is your radius? ")

do you see the difference?