Python & Advanced Analytics·Lesson 20 of 23·12 min
Data cleaning and analysis with pandas
This lesson is for enrolled learners
Concept Raw on-chain data rarely arrives analysis-ready even after it lands in a DataFrame: token amounts come back as large integer strings denominated in a token's smallest unit (e.g., "wei" for 18-decimal tokens), hex strings for addresses sometimes need normalization, and incomplete event decodes can leave null values scattered through otherwise-numeric columns. Cleaning these issues before analysis is not optional……
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