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dataframes

DataFrame operations and transformations

ProgrammingPolars Rust: Upsample Time-Series Gaps to 5m Intervals

Learn to upsample time-series gaps in Polars Rust to exact 5-minute intervals using date_range, vstack, and forward fill. Preserve non-aligned timestamps like 00:05:17 without replacement. Rust code examples for sensors data.

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ProgrammingPreserve All Digits: Polars Read Excel to Utf8

Learn how to preserve up to 12 decimal digits when reading Excel with Polars to string (Utf8). Fix truncation using xlsx2csv_options, infer_schema_length=0, schema_overrides, or openpyxl engine for exact precision.

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ProgrammingEnforce Unique customer_id in Pandas DataFrame

Ensure unique customer_id in Pandas: Debug drop_duplicates, normalize types, use set_index(verify_integrity=True), and detect duplicates.

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