What is wrong with the following code?
The code snippet provided below is intended to perform a simple arithmetic operation. However, it contains several errors that need to be addressed. Let’s take a closer look at the code and identify the issues.
“`python
def add_numbers(a, b):
return a + b
result = add_numbers(5, 10)
print(“The sum is: ” + result)
“`
The first issue in the code is that the `add_numbers` function returns a sum of two numbers, which is of type `int`. However, when attempting to concatenate the result with a string in the `print` statement, a `TypeError` is raised, as Python does not allow concatenation of an `int` with a `str`.
To fix this problem, we can convert the result to a string before concatenating it with the other string. Here’s the corrected code:
“`python
def add_numbers(a, b):
return a + b
result = add_numbers(5, 10)
print(“The sum is: ” + str(result))
“`
The second issue is that the code is not handling any potential exceptions that may arise during the execution of the function. For instance, if the function is called with non-numeric arguments, it will raise a `TypeError`. To make the code more robust, we can add type checking and exception handling.
Here’s the updated code with added error handling:
“`python
def add_numbers(a, b):
if not isinstance(a, (int, float)) or not isinstance(b, (int, float)):
raise TypeError(“Both arguments must be numbers.”)
return a + b
try:
result = add_numbers(5, 10)
print(“The sum is: ” + str(result))
except TypeError as e:
print(e)
“`
By addressing these issues, the code becomes more reliable and easier to maintain. Always remember to consider potential exceptions and handle them appropriately to ensure your code runs smoothly.
