Value error : invalid literal for int() with base 10 in hackrank-CodePudding

Below code is working fine locally where as it is failing in hackerrank any modification we need to do ??

n=int(input())

for i in range(n): 
    for y in range(i 1):
        print("* ",end="")
        
    print("")

CodePudding user response：

You are not validating the value that is going into the int() function. You can replicate the error with this snippet:

input_value = 'Some String'
int(input_value)

> ValueError: invalid literal for int() with base 10: 'Some String'

In your case I believe you would want to validate the argument provided by the user in input(). One alternative would be:

valid_input = False
while not valid_input:
    input_val = input()
    try:
        # Try to cast the value to an int
        n = int(input_val)
        # If it succeeds save and exit the loop.
        valid_input = True
    except ValueError:
        # If it could not cast it to an int
        print('Invalid input -- please enter a number')

And once you have your input, you can proceed with your code:

for i in range(n): 
    for y in range(i   1):
        print("* ", end="")
        
    print("")