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Vikram Aruchamy

Vikram is a passionate engineer who loves to learn, build and solve things using tech. He has nearly 15 years of experience in building real world software development and nearly 10 years of a professional programming with the full stack including AWS, Python, Java, Oracle Database, Oracle Apex, Postgresql. He is also an AWS Community Builder from May 15, 2021
Categories NumPy

How To Save And Load Numpy Array in Python – With Examples

A numpy array is used to store numerical data for manipulation. You can save and load a numpy array in python using the numpy.save() and numpy.load() methods. This tutorial teaches … Read more →

Categories NumPy

How To Write Numpy Array To A CSV file In Python – Definitive Guide

Numpy Arrays are used to store data in array format. You can use the savetxt() method to write a numPy array to a CSV file. Basic Example This tutorial teaches … Read more →

Categories Pandas NumPy

How To Read a CSV file Into a Record Array in Numpy Python – Definitive Guide

Numpy arrays are used for data manipulation. You can read the csv file into a record array in numpy using the np.genfromtxt() method. This tutorial teaches you how to read … Read more →

Categories Pandas NumPy

How To Convert Select Columns in Pandas Dataframe to Numpy Array – Definitive Guide

Pandas dataframe allows you to store data in a 2-dimensional structure. You can convert select columns in Pandas dataframe to NumPy array using arr = df[[“RegNo”, “Country_Code”]].to_numpy() statement. This tutorial … Read more →

Categories Pandas

How To Filter Pandas Dataframe Using In And NOT IN like SQL – Definitive Guide

Pandas dataframe store data in a row and column format. You can filter pandas dataframe using In and Not in like SQL using the df.isin() method. This tutorial teaches you … Read more →

Categories Pandas

How To Solve Unicode Decode Error While Reading CSV File in Pandas – With Examples

Each file has a specific encoding that denotes the characters’ types. You can solve the UnicodeDecodeError: ‘utf-8’ codec can’t decode byte error by detecting the proper encoding of the file … Read more →

Categories Pandas

How To Export a Pandas Dataframe To CSV without the Header and Index Columns – Definitive Guide

CSV files stores data in a comma-separated format. You can export a pandas dataframe to CSV without the header and index using the header=None and index=False parameters in the to_csv() … Read more →

Categories Pandas

How To Import Multiple CSV files And Concatenate them into Single Pandas Dataframe

Data might be in multiple CSVs, and you may need it in a single dataframe for analysis. You can import multiple csv files and concatenate them into a single pandas … Read more →

Categories Pandas

How to Remove the Index Column in Pandas While Reading from the CSV file – Definitive Guide

Pandas index columns allow identifying each row uniquely. You can remove the index column in pandas while reading from the CSV file using the parameter index_col=None parameter. You can drop … Read more →

Categories Pandas

How To Read Specific Columns From a CSV using Pandas Python – Definitive Guide

Sometimes you may want to read only specific columns from a CSV file. You can read specific columns from a CSV using read_csv(‘addresses.csv’, usecols=[1,2]) in Pandas. This tutorial teaches you … Read more →

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