Example 1: join two numpy 2d array
import numpy as np
a = np.array([[0, 1, 3], [5, 7, 9]])
b = np.array([[0, 2, 4], [6, 8, 10]])
c = np.concatenate((a, b), axis=0)
print(c)
Output :
[[ 0 1 3]
[ 5 7 9]
[ 0 2 4]
[ 6 8 10]]
Example 2: how to combine two arrays in python
# concatenate 2 numpy arrays: row-wise
>np.concatenate((array2D_1, array2D_2))
array([[ 0, 1, 2],
[ 3, 4, 5],
[ 6, 7, 8],
[10, 11, 12],
[13, 14, 15],
[16, 17, 18]])
Example 3: how to combine two lists in python
listone = [1,2,3]
listtwo = [4,5,6]
joinedlist = listone + listtwo
Example 4: append two list of number to one python
listone = [1,2,3]
listtwo = [4,5,6]
mergedlist = []
mergedlist.extend(listone)
mergedlist.extend(listtwo)
Example 5: join lists python
first_list = ["1", "2"]
second_list = ["3", "4"]
# Multiple ways to do this:
first_list += second_list
first_list = first_list + second_list
first_list.extend(second_list)