Learn VYPER with Real Code Examples

Vyper syntax is inspired by Python but intentionally limited for security.

It removes complex features to reduce attack surfaces (no modifiers, no inheritance).

Compiled directly to Ethereum Virtual Machine bytecode.

Designed for formal verification and auditing.

Used by DeFi, security-critical dApps, and DAO contracts.

Events and logs

Interfaces

Custom structs

ABI compatibility with Solidity

EVM-level optimization

Functions with strict typing

Events for logging

State variables with visibility

Custom structs

Fallback and default functions

contracts/ - Vyper source files

tests/ - Python tests

scripts/ - deployment scripts

interfaces/ - .vy interface files

build/ - compiled artifacts

Write Vyper (.vy) file

Compile to bytecode + ABI

Test and audit logic

Deploy via Brownie/Web3.py

Interact using generated ABI

Beginner: simple ERC-20

Intermediate: vaults, staking

Advanced: governance logic

Expert: DeFi primitives

Auditor: security proofs

Vyper vs Solidity: Vyper is safer but has fewer features.

Vyper vs Rust-based languages: Vyper is simpler but less powerful.

Vyper vs Yul: Vyper is high-level; Yul is low-level.

Vyper vs Cairo: Cairo targets STARK VMs; Vyper targets EVM.

Vyper vs Move: Move is resource-based; Vyper is minimalistic.

2017 – Initial Vyper prototype

2019 – First stable compiler

2021 – Major compiler upgrade

2023 – EVM opcodes alignment

2024–2025 – Ongoing security/perf improvements

ABI: contract interface

Bytecode: EVM machine code

Decorator: function annotation

State variable: persistent storage

Event: logged data on-chain