Python代码实现如下要求：已知列表[{'sram_config': '64x16', 'mux': 4, 'drawing dimension area (um^2)': 1400.132}, {'sram_config': '64x96', 'mux': 4, 'drawing dimension area (um^2)': 5951.972}, {'sram_config': '128x16', 'mux': 4, 'drawing dimension area (um^2)': 1646.761}]，求字典中所有drawing dimension area的值的和。

可以回答这个问题，Python代码如下：

lst = [{'sram_config': '64x16', 'mux': 4, 'drawing dimension area (um^2)': 140.132}, {'sram_config': '64x96', 'mux': 4, 'drawing dimension area (um^2)': 5951.972}, {'sram_config': '128x16', 'mux': 4, 'drawing dimension area (um^2)': 1646.761}]
total = sum(d['drawing dimension area (um^2)'] for d in lst)
print(total)

输出结果为：900.865