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Sequence 133 — T7 - pandas DataFrame mental model
Context: Technology Gate B - Programmatic Data Management | Technology Gate
Source: CDMP Master Execution Manual
When / purpose
Move from Python records to tabular analysis.
What you should learn
- DataFrame/Series.
- Rows, columns, index and dtypes.
- head/info/dtypes/value_counts.
Resources / limits
Technology Competency Roadmap: active T6–T10 only. Detailed Technology Competency Reference: topic detail/readiness only.
Do this in order
- Read a Meridian CSV.
- Inspect shape, columns and dtypes.
- Explain what each inspection call tells you.
Meridian application
Use Meridian synthetic files and database only for bounded practice.
Create / save
First-pass profiling notebook/script.
Stop / boundary
Stop before production data engineering, application development, advanced OOP, orchestration or distributed processing.
Completion gate
You can inspect an unfamiliar DataFrame and describe its structure before transforming it.
NEXT → Sequence 134
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