有序字典与键值解包

1# Insertion order controls the layout; assigning a dictionary copies its values.2page=canvas(size=(150mm,90mm),background="#ffffff")3labels=dict()4labels["B"]="Baseline"5labels["A"]="Annealed"6copy=labels7copy["B"]="Changed copy"8labels=labels.update({"C":"Cold worked"})9keys=labels.keys()10values=labels.values()11items=labels.items()12default=labels.get("missing","No data")13colors=["#0072b2","#d55e00","#009e73"]14for i,(key,value) in enumerate(items) {15 card=group()16 card.add(rect(size=(42mm,55mm),fill=colors[i]))17 card.add(text(content=key,font_family="DejaVu Sans",font_size=20pt,color="#ffffff"),offset=(5mm,7mm))18 card.add(text(content=value,font_family="DejaVu Sans",font_size=8pt,color="#ffffff"),offset=(5mm,35mm))19 page.add(card,offset=(5mm+i*48mm,10mm))20}21for i,(key,value) in enumerate(zip(keys,values)) {22 page.add(text(content=f"{i+1}. {key} = {value}",font_family="DejaVu Sans",font_size=8pt),offset=(5mm+i*48mm,72mm))23}