Featured Post

How to Check Column Nulls and Replace: Pandas

Here is a post that shows how to count Nulls and replace them with the value you want in the Pandas Dataframe. We have explained the process in two steps - Counting and Replacing the Null values. Count null values (column-wise) in Pandas ## count null values column-wise null_counts = df.isnull(). sum() print(null_counts) ``` Output: ``` Column1    1 Column2    1 Column3    5 dtype: int64 ``` In the above code, we first create a sample Pandas DataFrame `df` with some null values. Then, we use the `isnull()` function to create a DataFrame of the same shape as `df`, where each element is a boolean value indicating whether that element is null or not. Finally, we use the `sum()` function to count the number of null values in each column of the resulting DataFrame. The output shows the count of null values column-wise. to count null values column-wise: ``` df.isnull().sum() ``` ##Code snippet to count null values row-wise: ``` df.isnull().sum(axis=1) ``` In the above code, `df` is the Panda

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 support 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.

Python function error logic

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

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):
If num1 or num2 in [ 0,1,2,3,4,5,6,7,8,9]
     print( prints value)
    print( error)

Now, you are good to write functions and exceptions.



Popular posts from this blog

Explained Ideal Structure of Python Class

How to Check Kafka Available Brokers

6 Python file Methods Real Usage