calc-workbook 0.1.1
Easy-to-use Python library for accessing computed Excel cell values
Requires Python: >=3.6
Keywords: excel, formulas, workbook, automation, calculation

# calc-workbook

[![PyPI Version](https://img.shields.io/pypi/v/calc-workbook.svg)](https://pypi.org/project/calc-workbook/)
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**`calc-workbook`** is an easy-to-use Python library that loads Excel files, computes all formulas using the [`formulas`](https://pypi.org/project/formulas/) engine, and provides a clean, high-level API to access computed cell values from each sheet.  

## Overview

[`openpyxl`](https://pypi.org/project/openpyxl/) is the most common Python package for reading and writing Excel files; however, it does **not** calculate cell formulas.  
The [`formulas`](https://pypi.org/project/formulas/) package adds support for evaluating a large set of Excel formulas, but it does **not** provide a straightforward interface to retrieve the computed values per sheet.

**`calc-workbook`** bridges that gap by exposing a simple interface with two core classes:

* `CalcWorkbook` – loads and computes the workbook, providing access to individual sheets.
* `CalcSheet` – provides access to computed cell values and sheet metadata.

---

## Installation

```bash
pip install calc-workbook
```

---

### Example File

|       |    **A** |    **B** |
| ----- | -------: | -------: |
| **1** |       10 |        5 |
| **2** |       20 |       15 |
| **3** | `=A1+A2` | `=B1*B2` |

---

### Example Code

```python
from calc_workbook import CalcWorkbook

# Load workbook and compute formulas
wb = CalcWorkbook.load("example.xlsx")

# List available sheets (in lowercase)
print(wb.get_sheet_names())

# Access a specific sheet in lowercase
sheet = wb.get_sheet("sheet1") 
# Access first sheet
sheet = wb.get_sheet() 

# Retrieve computed values
print("A1:", sheet.cell("A1"))        # 10
print("A1:", sheet.cell([1, 1]))      # 10
print("A2:", sheet.cell("A2"))        # 20
print("A3:", sheet.cell("A3"))        # 30

# Get sheet dimensions
print("Rows:", sheet.rows())          # 3
print("Cols:", sheet.cols())          # 2
```

## Limitations

* Sheet names are stored and accessed in **lowercase** internally.
  When calling `get_sheet()`, always use the lowercase name (e.g., `"sheet1"`).

---

## API Reference

### class CalcWorkbook

Represents a computed Excel workbook.

#### Methods

| Method                                | Description                                                                                                  |
| ------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| `load(filename: str) -> CalcWorkbook` | Loads an Excel file, computes all formulas using the `formulas` engine, and returns a ready-to-use workbook. |
| `get_sheet_names() -> list[str]`      | Returns the list of all sheet names in the workbook.                                                         |
| `get_sheet(name: str) -> CalcSheet`   | Returns a `CalcSheet` object for the given sheet name.                                                       |

---

### class CalcSheet

Represents a single computed Excel worksheet.

#### Methods

| Method          | Description                                            |                |                                                                                              |
| --------------- | ------------------------------------------------------ | -------------- | -------------------------------------------------------------------------------------------- |
| `rows() -> int` | Returns the maximum number of rows containing data.    |                |                                                                                              |
| `cols() -> int` | Returns the maximum number of columns containing data. |                |                                                                                              |
| `cell(ref) -> Any` | Retrieves the computed value of a cell, either by `"A1"` format or `[col, row]` coordinates. |

---

---

## License

MIT License

Copyright (c) 2025 Alexandre Bento Freire

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
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