while Loop

Question

>>> numbers=list(range(2,20,2))
>>> print(numbers)
[2, 4, 6, 8, 10, 12, 14, 16, 18]
>>> max_index=len(numbers)
>>> print(max_index)
9
>>> x=0
>>> while x<=max_index:
y=numbers[x]
print(y+"!")
x=x+1

Traceback (most recent call last):
File "<pyshell#120>", line 3, in <module>
print(y+"!")
TypeError: unsupported operand type(s) for +: 'int' and 'str'
>>>

Why cant I get above coding to work. it returns with that error.
I want to print each list item with !...

Answer 1

what I mean is the variable y is a integer and you are adding a string to it which caused the error so you need to use str (y) which converts the value of y to a string so you can concatenate it with another string

Answer 2

it looks like you need to convert y to a string before adding the exclamation mark.

Answer 3

Thanks pal. now when i converted y to a string I get this..still not getting numbers from the list.

>>> x=0
>>> while x<=max_index:
y=numbers[x]
print("y"+"!")
x=x+1

y!
y!
y!
y!
y!
y!
y!
y!
y!