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vyperlang

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vyper
Pythonic Smart Contract Language for the EVM

Python · 5180 stars

Beginner friendly Everything

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Indexed struct event field accepted then unusable Open

bug - type 0 bug - typechecker

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

vyperlang/vyper#5137 · Opened Jun 21, 2026
Invalid JSON ABI stateMutability raises CompilerPanic Open

bug - type 0 parser sev - low

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

vyperlang/vyper#5123 · 1 comment · Opened Jun 12, 2026
Missing event indexed field causes compiler panic Open

needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

vyperlang/vyper#5120 · Opened Jun 12, 2026
venom: `int -> decimal` lower-bound clamp off by one, returns out-of-range decimal Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

vyperlang/vyper#5110 · Opened Jun 12, 2026
broken validation in get_storage_layout_overrides silently drops extra overrides Open

needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

vyperlang/vyper#5076 · Opened Jun 12, 2026
IRAnalysesCache fallback global cache does not register self Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

vyperlang/vyper#5046 · Opened Jun 11, 2026
Venom abi_encode drops HexBytes method_id silently Open

bug - type 1 bug - venom needs triage venom

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

vyperlang/vyper#5018 · 1 comment · Opened May 27, 2026
Layout output omits reserved nonreentrant slot Open

needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

vyperlang/vyper#4959 · 1 comment · Opened May 8, 2026
Raw AttributeError for non-name for loop targets missing type annotation Open

bug - typechecker bug - UX

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

vyperlang/vyper#4952 · Opened May 7, 2026
Improve error message for `log` Open

bug - UX

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

vyperlang/vyper#4306 · Opened Oct 15, 2024
incorrect exception hint when import alias contains a dot Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

vyperlang/vyper#4278 · 1 comment · Opened Oct 7, 2024
Imprecise Assertion in `Expr.handle_binop()` Open

sev - info

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

vyperlang/vyper#4101 · Opened Apr 25, 2024
Incorrect Documentation for `shift()` Open

sev - low

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

vyperlang/vyper#4107 · Opened Apr 25, 2024
Redundant Check of Module Use Open

sev - info

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

vyperlang/vyper#4141 · 1 reaction · Opened Apr 3, 2024

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