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將數組的集合傳遞給函數參數

[英]Passing a collection of arrays to function argument

如何創建數組的集合並將其傳遞給函數,讓函數對集合中的每個數組執行操作,然后將數組(可能以集合形式)返回例程? 數組需要保持其標識(通過引用與操作函數進行傳遞)。 這將幫助我清理並壓縮當前代碼。 我不是專業的程序員,所以我意識到我的代碼可以得到極大的改進。 任何指導表示贊賞。

當前代碼示例:

import numpy as np

# Function that performs some operation on array (matrix)
def addLine(x):
    x = np.vstack([x,np.random.rand(1,5)])
    return x

def mainLoop():
    A = np.zeros((1,5),dtype=np.float32)
    B = np.ones((1,5),dtype=np.float32)
    C = np.ones((1,5),dtype=np.float32)

    # Do stuff

    A = addLine(A)
    B = addLine(B)
    C = addLine(C)

我想做的是:

# Function that accepts a collection of arrays as argument, performs 
# operation, and returns modified arrays to the same identity / name     
def addLines(x):
    for n in range(len(x)):
        x[n] = addLine(x)
        return x[n]

def mainLoop():
    A = np.zeros((1,5),dtype=np.float32)
    B = np.ones((1,5),dtype=np.float32)
    C = np.ones((1,5),dtype=np.float32)

    # Do stuff
    # Create a collection of all arrays to perform operations on
    AllArrays = [A,B,C]

    # Pass collection of arrays to function (I likely need a for loop here)
    AllArrays = addLines(AllArrays)

    # Perform further operations on individual arrays
    A = A+2
    B = B+1
    C = C-1

這個微小的變化怎么樣?

def addLine(*args):
    args = map(lambda x: np.vstack([x,np.random.rand(1,5)]), *args)
    return args

AllArrays = addLine(AllArrays)

A, B, C = AllArrays

A

array([[ 0.        ,  0.        ,  0.        ,  0.        ,  0.        ],
       [ 0.66237197,  0.07125813,  0.5454597 ,  0.44901189,  0.89820099]])

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