import numpy as np x = [1,2,3] a = np.asarray(x) print (a)
import numpy as np x = (1,2,3) a = np.asarray(x) print (a)
import numpy as np x = [(1,2,3),(4,5)] a = np.asarray(x) print (a)
import numpy as np x = [1,2,3] a = np.asarray(x, dtype = float) print (a)
import numpy as np s = b'Hello World' a = np.frombuffer(s, dtype = 'S1') print (a)
import numpy as np s = 'Hello World' a = np.frombuffer(s, dtype = 'S1') print (a)
import numpy as np # 使用 range 函数创建列表对象 list=range(5) it=iter(list) # 使用迭代器创建 ndarray x=np.fromiter(it, dtype=float) print(x)