append 3D array using for loop

Question

I would like to append data in to array like m[][][] with the help of for three loop.

for i in range (4):
    for j in  range (6):
        for k in range (10):
            m[i][j][k]=i*j*k
print(m)

jamylak · Accepted Answer · 2014-12-25 06:49:12Z

3

m = [[[i*j*k for k in range(10)] for j in range(6)] for i in range(4)]

answered Dec 25, 2014 at 6:49

jamylak

134k30 gold badges238 silver badges240 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Shai · Accepted Answer · 2014-12-25 06:46:57Z

1

Since m is not defined when you start your loop python does not know how to access the [i][j][k]-th element.

m = [] # init the first level
for i in range (4):
    m.append([]) # init m[i]
    for j in  range (6):
        m[i].append([]) #  init m[i][j]
        for k in range (10):
            m[i][j].append( i*j*k ) # add m[i][j] the k-th element
print(m)

answered Dec 25, 2014 at 6:46

Shai

115k39 gold badges259 silver badges398 bronze badges

Comments

Shahriar · Accepted Answer · 2014-12-25 06:55:58Z

1

You can also use your code

import numpy
m = numpy.zeros((4,6,10))

for i in range (4):
    for j in  range (6):
        for k in range (10):
            m[i][j][k]=i*j*k

answered Dec 25, 2014 at 6:55

Shahriar

13.9k11 gold badges83 silver badges97 bronze badges

Collectives™ on Stack Overflow

append 3D array using for loop

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related