使用 Python 获取带有实例的 int 的机器限制信息
若要获取整数类型的机器限制信息,请在 Python Numpy 中使用 numpy.iinfo() 方法。第一个参数是 int_type,即获取有关其信息的一种整数数据类型。
步骤
首先,导入所需的库 −
import numpy as np
min 是给定 dtype 的最小值,max 是给定 dtype 的最小值。
使用实例检查 int16 类型 −
a = np.iinfo(np.int16(20)) print("Minimum of int16 type...\n",a.min) print("Maximum of int16 type...\n",a.max)
使用实例检查 int32 类型 −
b = np.iinfo(np.int32(30)) print("\nMinimum of int32 type...\n",b.min) print("Maximum of int32 type...\n",b.max)
使用实例检查 int64 类型 −
c = np.iinfo(np.int64(50)) print("\nMinimum of int64 type...\n",c.min) print("Maximum of int64 type...\n",c.max)
示例
import numpy as np # To get the machine limits information for integer types, use the numpy.iinfo() method in Python Numpy # The first parameter is the int_type i.e. the kind of integer data type to get information about. # Checking for int16 type with instances # The min is the minimum value of given dtype. # The max is the minimum value of given dtype. a = np.iinfo(np.int16(20)) print("Minimum of int16 type...\n",a.min) print("Maximum of int16 type...\n",a.max) # Checking for int32 type with instances b = np.iinfo(np.int32(30)) print("\nMinimum of int32 type...\n",b.min) print("Maximum of int32 type...\n",b.max) # Checking for int64 type with instances c = np.iinfo(np.int64(50)) print("\nMinimum of int64 type...\n",c.min) print("Maximum of int64 type...\n",c.max)
输出
Minimum of int16 type... -32768 Maximum of int16 type... 32767 Minimum of int32 type... -2147483648 Maximum of int32 type... 2147483647 Minimum of int64 type... -9223372036854775808 Maximum of int64 type... 9223372036854775807
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