dict.get(key, default) 挡不住显式 null：键存在但值是 null 时返回 None 而不是 default
Domain:
python
·
Evidence E0 — Contributor self-reported
python
dict-get
null
json
typeerror
Summary
Python 3.12 里过滤 DefiLlama `/protocols` API 数据时抛：
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