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Sub-skill of xlsx-to-python: Recommended Stack (+2).
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| name | xlsx-to-python-recommended-stack |
| description | Sub-skill of xlsx-to-python: Recommended Stack (+2). |
| version | 1.0.0 |
| category | data |
| type | reference |
| scripts_exempt | true |
| Library | Purpose | Install | Status |
|---|---|---|---|
| openpyxl | Cell values + formula strings + named ranges | uv add openpyxl | Active, stable |
| formulas | Formula parsing, AST, dependency graph, evaluation | uv add formulas | Active (v1.3.3) |
| networkx | Dependency graph analysis (topological sort) | uv add networkx | Active, stable |
| oletools | VBA macro source code extraction from .xlsm/.xls | uv add oletools | Active, stable |
| Library | What It Does | Why Not Primary | When to Use |
|---|---|---|---|
| pycel | Compiles Excel to executable Python + graph viz | Broader scope than needed; heavier dependency | When you need full workbook simulation |
| xlcalculator | Converts Excel formulas to Python + evaluates | Inactive (no releases in 12+ months); modernized koala2 | Reference for formula-to-Python translation patterns |
| graphedexcel | Cell dependency graph visualization (networkx + matplotlib) | Viz-only; no formula parsing | Quick visual audit of spreadsheet complexity |
| excel-dependency-graph | Directed graph of formula dependencies | Lightweight but limited features | Simple dependency mapping without evaluation |
| formula-dependency-excel | Cell dependency extraction | Minimal; proof-of-concept level | Quick prototyping |
formulas LibraryThe formulas library can compile an entire Excel workbook into a Python
DispatchPipe — a callable function with defined inputs and outputs. This is
the most mature approach for complex workbooks:
import formulas
# Load and compile the workbook
xl_model = formulas.ExcelModel().loads("calculation.xlsx").finish()
# Get the dependency-ordered calculation dispatcher
solution = xl_model.calculate()
# Access any cell's computed value
value = solution.get("'Sheet1'!B10")
# Compile a reusable function with fixed I/O
func = xl_model.compile(
inputs=["'Inputs'!B2:B10"],
outputs=["'Results'!C5:C8"]
)
result = func({"'Inputs'!B2:B10": input_array})
When to use formulas vs raw openpyxl:
| Scenario | Use |
|---|---|
| Simple formulas (arithmetic, basic functions) | openpyxl + custom parser |
| Complex formulas (VLOOKUP, INDEX/MATCH, nested IF) | formulas library |
| Need dependency graph visualization | formulas + plot extra, or graphedexcel |
| Need to evaluate formulas without Excel | formulas or pycel |
| Need only formula strings + cell refs | openpyxl alone |