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Showing posts with the label Recursive Function

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How to Read a CSV File from Amazon S3 Using Python (With Headers and Rows Displayed)

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  Introduction If you’re working with cloud data, especially on AWS, chances are you’ll encounter data stored in CSV files inside an Amazon S3 bucket . Whether you're building a data pipeline or a quick analysis tool, reading data directly from S3 in Python is a fast, reliable, and scalable way to get started. In this blog post, we’ll walk through: Setting up access to S3 Reading a CSV file using Python and Boto3 Displaying headers and rows Tips to handle larger datasets Let’s jump in! What You’ll Need An AWS account An S3 bucket with a CSV file uploaded AWS credentials (access key and secret key) Python 3.x installed boto3 and pandas libraries installed (you can install them via pip) pip install boto3 pandas Step-by-Step: Read CSV from S3 Let’s say your S3 bucket is named my-data-bucket , and your CSV file is sample-data/employees.csv . ✅ Step 1: Import Required Libraries import boto3 import pandas as pd from io import StringIO boto3 is...
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How to Write Recursive Shell Script in Bash Terminal

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Here's a simple bash recursive function. To write it, you can use JavaScript and other scripting languages. Below is the example that shows you how to write a recursive function in the bash shell. Recursive function Precisely, calling the same function within it is called the Recursive function. We call itself and its contents.  Moreover, the recursive functions go in the loop due to self-calling. While writing the code, ensure it has a condition that breaks the loop. Recursive logic #!/bin/bash for ((i = 1; i < 65; i++)) { ((arr[i - 1] = i)) } i = 1; key = 8 function linear_search { echo "Element value: ${arr[$i-1]}" if ((arr[i - 1] == key)) then echo "Linear search found $key on attempt $i" return 0 => it breaks the loop else ((i++)) linear_search = > Calling th same script fi } linear_search = > Calling the same script Output Here is the dissection of the output. Displayed the array's elements until match-condition occurs. In the end, a displa...
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