colors = ['black', 'white']
sizes = ['L', 'M', 'S']
shirts = [(color, size) for color in colors for size in sizes]
print(shirts)
使用列表推導式計算笛卡爾積
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colors = ['black', 'white']
sizes = ['L', 'M', 'S']
shirts = [(color, size) for color in colors for size in sizes]
print(shirts)