Ledger LandISSUE #32 of 90

vyper · the python-flavored alternative

BlockyVSDouble-Spend Dan

Blocky saysVyper is an alternative contract language — Python-flavored, deliberately simpler than Solidity.

Vyper targets the same EVM but trades Solidity's flexibility for auditability: Pythonic syntax, no inheritance, no modifiers, no inline assembly, bounded loops. The philosophy is "make insecure code hard to write." It's used where security review is paramount (some DeFi protocols). Fewer features means fewer footguns — at the cost of expressiveness.

Power-ups you unlock

Python-flavored, EVM-targeted
Deliberately minimal (no inheritance/modifiers)
Optimized for auditability and security
Trades expressiveness for fewer footguns

Double-Spend Dan attacks — common mistakes

Expecting Solidity features in Vyper
Choosing it without team familiarity
Assuming simpler language = automatically safe

Boss battleExplain the security argument for Vyper’s missing features.

Example code

<!doctype html><html><head><meta charset="utf-8"></head>
<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre># vyper — minimal, auditable
count: public(uint256)

@external
def inc(): self.count += 1
# no inheritance, no inline asm → fewer footguns</pre></body></html>

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