### Python Function: How to Write Error Logic

Here's an example python user-defined function. Here, you'll know how to write error conditions. The best examples is if and else. I have shared the logic here for your reference.

**is one of the top programming languages. Python does supportPython**

**Functions**. While writing functions you also need to consider

**some errors.**Those are called exceptions. I am explaining how to give error logic in a function of Python.

Exception-handling means to have logic for error scenarios. Writing exception I will show in a simple Function.

In this post I will give you syntax for writing function and exception.

Here is my

__simple____Function__that multiplies two numbers.**Logic to write Function in Python to Multiply Two Numbers**

def product (num1,num2):

prod=num1*num2

print( ' The product of the numbers is \t:

'+str(prod)

**Parameters used the Python Function**

- The 'def' means you are defining function with a name of 'product'.
- In the parameters of 'product', you can see TWO variables. Those are to take input from the user for multiplication.
- prod=num1*num2. That means product of two numbers assigning to 'prod' variable.
- Python is dynamic language and you no need to define variables explicitly.
- Print command displays your result to the terminal or console.
- The '\t' tells 'space' between comment and the result.

**How Python Function works**

**How to write error logic in Python Function**

In the below code when you supply other than numeric, it sends an error message.

def product(num1,num2):

prod=num1*num2

If num1 or num2 in [ 0,1,2,3,4,5,6,7,8,9]

print( prints value)

elif

print( error)

Now, you are good to write functions and exceptions.

**References**

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