Free · Self-Paced · Real Working Code

Pandas Masterclass.
5 Days. Zero Cost.

The only pandas course built around real data problems. From loading your first CSV to processing datasets too large to fit in memory — every lesson ships working code you can use on your own data.

Free forever · No credit card · No spam

analysis.py
import pandas as pd

df = pd.read_csv("sales_2024.csv")
df = df.dropna().drop_duplicates()

monthly = df.groupby("month")["revenue"].agg(
    total="sum", avg="mean", count="count"
).reset_index()

print(monthly.sort_values("total", ascending=False))
5
Days of Lessons
Free
Forever
20+
Code Examples
0
Prerequisites

pandas the way practitioners use it

Most pandas tutorials teach you methods in isolation. This course teaches you to think in DataFrames — the same way data scientists who get paid to use pandas actually think.

Real datasets

Every lesson uses real-world-style data: sales reports, time series, messy CSVs with nulls and wrong dtypes. Not toy examples with three rows.

Performance-first

Day 5 covers vectorization, chunking, and handling datasets larger than RAM. Skills that separate junior from senior data practitioners.

Copy-paste ready

Every code block runs. No "exercise left to the reader." You finish each day with something working on your machine.

5 days. Everything that matters.

1
Day 1

DataFrames — Loading, Inspecting, Selecting

Read CSVs, Excel files, and JSON. Inspect shape, dtypes, and nulls. Select rows and columns with loc, iloc, and boolean filtering.

~60 min read_csvloc / ilocBoolean masks
2
Day 2

Cleaning — Missing Values, Duplicates, dtypes

Handle nulls with fillna and dropna. Remove duplicates. Fix wrong data types. Build a reusable cleaning pipeline.

~60 min fillnaastypedrop_duplicates
3
Day 3

Transformation — groupby, pivot, merge, apply

Aggregate with groupby. Reshape with pivot_table. Combine DataFrames with merge and concat. Apply custom functions row-by-row.

~75 min groupbypivot_tablemerge
4
Day 4

Time Series and Advanced Indexing

Parse dates, resample by period, rolling averages, shifting, and DatetimeIndex. Everything you need for financial or operational time series.

~70 min resamplerollingDatetimeIndex
5
Day 5

Performance — Vectorization, Chunking, Large Datasets

Stop using apply() for everything. Use vectorized operations for 100x speedups. Process files larger than RAM with chunking. Profile and fix slow code.

~75 min vectorizationchunkingprofiling

Start the course free

Drop your email and we'll send you Day 1 plus a cheat sheet of the 20 pandas methods you'll use 80% of the time.

Free forever. No credit card. Unsubscribe anytime.

Ready to go deeper?

Learn pandas in person at our AI Bootcamp

3 days of hands-on training with a practitioner instructor. Small groups, real projects, and a network of peers building the same skills.

DenverLos AngelesNew YorkChicagoDallas

Common questions

Do I need to know Python before this course?

You need basic Python — variables, loops, functions. If you don't have that yet, take our free Python for AI course first, then come back.

Is this really free?

Yes. All 5 days, forever. We make money from bootcamp seats, not course paywalls.

What version of pandas does this use?

pandas 2.x. The code works on 1.x too with minor differences — we note them where they matter.

How long does each lesson take?

60–75 minutes per day. Self-paced, so take as long as you need. Most people finish in 5–7 days total.