While Loop program

Python
1

In the weight conversion program, can you give me code that returns “Not a valid input” each time i put a string value in weight and returns to “enter your weight” .also “Not a valid input” each time i enter a integer or float in unit and returns to “enter unit” again.

2

Could you post your code

3

Capture
Capture915×508 35.7 KB

4

This seems to work.

weight = 0
unit = “”

while True:
while True:
weight = input('Enter your weight: ')
try:
int(weight)
except ValueError:
print(“Not a valid input. (hint: this should be a number only)”)
else:
break
while True:
unit = input("What is the unit of weight L(pounds) or K(kilograms)? ").upper()
if unit != (“L” or “K”):
print(“Enter L for pounds or K for kilograms.”)
else:
break
break

5

Thank you for the reply. Since the indents are not clear. I’m unable to debug this as I’m a beginner. Can you give some kind of clear screenshot.

6

No, please don’t post screenshots of code. You can’t search screenshots. You can’t copy&paste the code in screenshots but have to type it out to try the code. Use code fences to properly format code here.

1 Like
7

Sorry,

This was my first post. I’m new to Python and don’t code professionally or anything, so I’m sure the code below could be better. Thanks for the link SAM.

weight = 0
unit = ""

while True:
	while True:
		weight = input('Enter your weight: ')
		try:
		  int(weight)
		except ValueError:
		  print("Not a valid input. (hint: this should be a number only)")
		else: 
		  break
	while True:
		unit = input("What is the unit of weight L(pounds) or K(kilograms)? ").upper()
		if unit != ("L" or "K"):
			print("Enter L for pounds or K for kilograms.")
		else:
			break	
	break
8 
while True

is not very pythonic. Check this post where I show a differente way to handle the while loop.