Batch Processing Reports
Generate reports automatically.
Automating Repetitive Reports
The real payoff of openpyxl is automation: generating dozens of similar reports without manual work. Think monthly sales sheets per region, or a summary file per client.
The pattern is: loop over data groups, build a workbook for each, save with a unique name.
Grouping the Data
Batch reports start by grouping records, for example by region. Standard Python handles this cleanly before any Excel work begins.
records = [
{'region': 'North', 'sales': 100},
{'region': 'South', 'sales': 80},
{'region': 'North', 'sales': 120},
]
groups = {}
for r in records:
groups.setdefault(r['region'], []).append(r['sales'])
for region, sales in groups.items():
print(region, sales, 'total', sum(sales))All lessons in this course
- Reading Workbooks
- Writing and Styling Cells
- Formulas and Charts
- Batch Processing Reports