Building AI Agents in Python from Scratch — PickAClass
4.6 (16) ⏱ 2h 42m 📚 27 lessons 🎧 Audio version

Building AI Agents in Python from Scratch

Understand the core mechanics of autonomous systems and write plain Python code to create intelligent agents from the ground up.

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About this course

AI agents are transforming how we interact with technology, moving beyond simple chat interfaces to autonomous, multi-step problem-solving. If you want to understand how these intelligent systems actually work under the hood, building one from scratch is the most effective approach. This course strips away the magic of heavy, complex frameworks, guiding you to build functional, autonomous AI agents using plain Python. You will learn the underlying architecture of agentic systems, from memory management to tool execution, empowering you to design custom AI solutions tailored to your specific needs. What you'll learn: • Understand the fundamental terminology, concepts, and architecture of autonomous AI agents. • Build core agent loops and decision-making processes using standard Python. • Implement modern tool calling capabilities so your agents can interact with external APIs and services. • Design basic memory systems and retrieval-augmented generation (RAG) patterns for context awareness. • Apply modern Python practices, including type hints and async functions, to structure your agent code effectively. • Practice foundational prompt engineering techniques to guide agent behavior reliably. You will start by exploring the foundational definitions and concepts of agentic AI before moving into practical implementation. The text-based lessons will walk you step-by-step through writing the logic, managing state, and expanding your agent's capabilities through written coding exercises. This course is designed specifically for beginners with basic Python knowledge who want to understand AI agents without any prior machine learning experience. Start reading today to unlock the mechanics of autonomous AI and build your first intelligent agent from scratch.

What you'll get

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  • Short & focused
    2h 42m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
Skills profile · verifiable
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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Building AI Agents in Python from Scratch
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
Building AI Agents in Python from Scratch
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (16)

Agnieszka Kamińska PL Verified learner
★ 4 · July 25, 2026

Kurs uczy budowania agentów AI od podstaw w czystym Pythonie, bez ukrywania logiki za frameworkiem, co bardzo cenię. Tempo w drugiej połowie kursu jest trochę szybsze niż na początku, więc czasem trzeba było cofnąć nagranie. Mimo to wyszedłem z solidnym zrozumieniem, jak działa pętla decyzyjna agenta.

مريم سعيد EG Verified learner
★ 4 · July 22, 2026

شرح ممتاز لكن يحتاج أمثلة أكثر

Nathan Lefevre FR Verified learner
★ 4 · July 18, 2026

Ce cours va vraiment au fond des choses en expliquant la mécanique des agents autonomes sans passer par des bibliothèques toutes faites. J'ai apprécié écrire le code en Python pur, ça force à vraiment comprendre chaque étape plutôt que de copier-coller. Seul bémol, certains passages sur la gestion de la mémoire de l'agent auraient mérité plus de détails.

Arthur David BE Verified learner
★ 5 · July 9, 2026

Comprendre enfin la boucle d'un agent autonome en écrivant tout en Python pur, sans cacher la mécanique derrière une librairie, c'était exactement mon besoin.

Lerato Mofokeng ZA Verified learner
★ 5 · July 8, 2026

Building an agent loop in plain Python with no heavy framework demystified the whole thing for me; the tool-calling section was gold.

عبدالرحمن بن فيصل الكندي OM
★ 5 · July 5, 2026

هذه الدورة غيّرت فهمي بالكامل لكيفية عمل الوكلاء الذكية من الداخل، لأنها لا تعتمد على أي مكتبات جاهزة بل تبني كل شيء بلغة بايثون خالصة خطوة بخطوة. أعجبني كثيرًا أسلوب الشرح الذي يبدأ من الأساسيات البسيطة مثل حلقة القرار ثم يتوسع تدريجيًا نحو أنظمة أكثر تعقيدًا. كل درس يضيف طبقة جديدة من الفهم دون أن يشعرك بالتشتت أو الإرهاق. بعد إنهاء الدورة استطعت بناء وكيل بسيط خاص بي من الصفر وفهمت فعليًا كل سطر كتبته فيه. أنصح بشدة بمتابعتها لمن يريد فهم الآليات الحقيقية وراء الوكلاء الذكية وليس مجرد استخدام أدوات جاهزة.

Maya Anggraini ID Verified learner
★ 4 · July 4, 2026

Penjelasan agen AI yang jelas dan mendalam

윤서진 KR
★ 5 · July 4, 2026

라이브러리 없이 순수 파이썬으로 에이전트를 처음부터 만드는 과정이라 원리를 제대로 이해할 수 있었어요. 설명 순서도 논리적이라 따라가기 편했고, 강의 끝날 때쯤엔 제 손으로 작은 에이전트를 완성했습니다. 개념만 배우는 게 아니라 직접 만들어보는 방식이라 훨씬 오래 기억에 남을 것 같아요.

Хамит Абильдин KZ
★ 5 · June 26, 2026

Курс объясняет механику автономных агентов на чистом Python без готовых фреймворков, и это реально помогает понять, что происходит под капотом.

Trần Thị Thanh VN Verified learner
★ 5 · June 25, 2026

Khóa học giải thích rất rõ cách xây dựng agent AI bằng Python thuần từ đầu đến cuối, không dùng thư viện có sẵn nên hiểu sâu hơn hẳn.

Matilde Santoro IT Verified learner
★ 5 · June 14, 2026

Finalmente ho capito gli agenti AI

Piotr Nowak PL Verified learner
★ 5 · June 12, 2026

Świetny kurs dla osób, które chcą naprawdę zrozumieć, jak działają agenci AI pod maską, a nie tylko korzystać z gotowych bibliotek. Kod pisany od zera w czystym Pythonie sprawia, że każdy element mechaniki staje się jasny. Po ukończeniu kursu czuję, że rozumiem temat dużo głębiej niż wcześniej.

Nurul Huda binti Ahmad MY Verified learner
★ 5 · June 11, 2026

Kursus ini mengajar cara bina ejen AI dari asas menggunakan Python tulen, jadi saya betul-betul faham mekanik di sebaliknya berbanding sekadar guna library sedia ada.

Daan Bakker NL Verified learner
★ 4 · June 8, 2026

Duidelijke uitleg over hoe autonome agents echt werken onder de motorkap, al had ik graag wat meer voorbeelden gezien bij het laatste hoofdstuk.

Idris Lawal NG Verified learner
★ 4 · June 7, 2026

This course strips away all the framework magic and shows you exactly how an AI agent's decision loop works using plain Python. I really valued that approach because it forced me to understand the mechanics instead of just importing a library and hoping for the best. The early lessons on the core loop are excellent and very well paced. Where it loses a star for me is the section on tool integration, which moves faster than the rest and could use another example or two. Still, by the end I had built a working agent from scratch and actually understood every piece of it.

Raúl Herrera EC Verified learner
★ 4 · May 26, 2026

Me gustó mucho que el curso construya los agentes desde cero en Python puro, sin depender de frameworks que ocultan lo que realmente pasa. Se nota que está pensado para entender la mecánica interna y no solo usar herramientas. Lo único es que algunas secciones intermedias avanzan bastante rápido.

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Yes — full refund within 14 days, no questions asked.

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Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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