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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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Python Default Argument is Self Why do We Need it

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Python self as default argument, here is the reason. Below, you will find an example and the importance of self-argument.


python self as default argument

Structure of a class

The default argument is self. The self-argument states the function belongs to the class that we refer to here. Access to class members' details of one member to another is possible through self-argument. So self-argument is mandatory.


class <name of the class>:
def <function name>(<arguments>):
...
<members>


Self Argument

A python class consists of methods these also called functions. The default self-argument you need to supply in all the class methods .

Python class with self argument

class employee: 
    def getdata(self): 
         self.name=input('Enter name\t:') 
         self.age=input('Enter age\t:') 
   def putdata(self): 
         print('Name\t:',self.name)
         print('Age\t:',self.age) 

e1=employee() 
e1.getdata() 
e1.putdata()


Python class same code

Output from python class

Here, I have Imported my .py  module to the Python3 shell. It ran automatically. You may get syntax errors while importing, those you need to fix if any.


Here is list of commands to run Python class


References

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