Python 程序复制数组

编写一个Python程序将Numpy数组复制到另一个数组。在此编程语言中，我们可以使用等于运算符将完整的Numpy数组复制到另一个数组。

import numpy as np

cparr = np.array([10, 20, 30, 40, 50])

copyarr = cparr

print("***Numpy Arrya Copy Result***")
print("Original Array = ", cparr)
print("Copied Array   = ", copyarr)

输出

***Numpy Arrya Copy Result***
Original Array =  [10 20 30 40 50]
Copied Array   =  [10 20 30 40 50]

在此示例中，我们使用了元组切片技术将所需项复制到另一个Numpy数组。

import numpy as np

cparr = np.array([10, 20, 30, 40, 50, 60, 70, 80, 90])

copyarr1 = cparr
copyarr2 = cparr[2:7]
copyarr3 = cparr[3:]
copyarr4 = cparr[::-1]

print("***Numpy Arrya Index Copy Result by Slicing***")
print("Original Array = ", cparr)
print("Copied Array   = ", copyarr1)
print("Copy Array from 2 to 7   = ", copyarr2)
print("Copy Array from 3 to End   = ", copyarr3)
print("Reverse Array   = ", copyarr4)

下面提到的程序将使用For Loop range来复制数组。

import numpy as np

cparr = np.array([12, 22, 35, 55, 47])
copyarr = np.empty(5)

for i in range(len(cparr)):
    copyarr[i] = cparr[i]

print("***Numpy Arrya Copy Result***")
print("Original Array = ", cparr)
print("Copied Array   = ", copyarr)

使用 for 循环输出

***Numpy Arrya Copy Result***
Original Array =  [12 22 35 55 47]
Copied Array   =  [12. 22. 35. 55. 47.]