How to Clean a CSV File with Pandas
Clean a messy synthetic employee dataset using a structured 5-step workflow.
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Project Description
In this project, you will clean a messy synthetic employee dataset using a structured, step-by-step workflow. The dataset includes encoding issues, wrong date formats, mixed types, and inconsistent categorical values.
The focus is on building a repeatable cleaning process, not just fixing one specific file.
Project Requirements
Load the dataset and inspect it before doing anything
Handle encoding and delimiter issues at load time
Fix column data types explicitly using the
dtypeargumentConvert date columns using
pd.to_datetime()witherrors='coerce'Standardize categorical columns (strip whitespace, fix capitalisation)
Export a cleaned version of the dataset and do a final audit
Technologies to Use
Python
Pandas
Jupyter Notebook
What You Will Learn
The data cleaning workflow I鈥檒l be working with consists of 5 simple stages(Load, Inspect, Clean, Review, Export) that you can reuse on any dataset. You will also understand subtle issues like silent type casting and why checking the first few rows before loading a large file can save you a lot of time.
Want to See a Solution?
A full walkthrough of this project is available on Towards Data Science: 馃敆 I Cleaned a Messy CSV File Using Pandas
