python中列表数据保留2位小数(一维,二维)
(1)一维:代码:list_1d=[0.23222,0.331212,0.21398331]print(list_1d)mid_np = np.array(list_1d)print(mid_np)mid_np_2f = np.round(mid_np,2)print(mid_np_2f)运行结果:(2)二维:代码:运行结果:补充:python中 list 与数组的互相转换(1)list转arra
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直接转:
import numpy as np list_2d =[[0.23222,0.331212,0.21398331],[0.345222,0.391212,0.81398331],[0.98222,0.761212,0.99398331]] print(list_2d) print(np.round(list_2d,2))
(1)一维:
代码:
list_1d=[0.23222,0.331212,0.21398331] print(list_1d) mid_np = np.array(list_1d) print(mid_np) mid_np_2f = np.round(mid_np,2) print(mid_np_2f)
运行结果:
(2)二维:
代码:
import numpy as np list_2d =[[0.23222,0.331212,0.21398331],[0.345222,0.391212,0.81398331],[0.98222,0.761212,0.99398331]] print(list_2d) mid_np = np.array(list_2d) print(mid_np) mid_np_2f = np.round(mid_np,2) print(mid_np_2f) print(mid_np_2f.tolist())
运行结果:
补充:python中 list 与数组的互相转换
(1)list转array
np.array(a)
(2)array 转list
a.tolist()
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