how to input 2-d array in python
matrix = [input().split() for i in range(no_of_rows)] # if only row is given and the number of coloumn has to be decide by user
matrix= [[input() for j in range(no_of_cols)] for i in range(no_of_rows)] # if both row and coloumn has been taken as input from userhow to create 2d list in python
o=[]
for i in range(0,rows):
x=[]
for j in range(0,cols):
x.append(0)
o.append(x)
#if you use [[0]*cols]*rows all rows will become the same list
#so editing in one row will edit all rowscreate a 2d array in python
def build_matrix(rows, cols):
matrix = []
for r in range(0, rows):
matrix.append([0 for c in range(0, cols)])
return matrix
if __name__ == '__main__':
build_matrix(6, 10)2d array python3
# 5x6, 2-d array of booleans using list comprehension:
matrix = [[False for col in range(6)] for row in range(5)]
# 6x5, 2-d array of banana's using list comprehension:
matrix = [['banana' for col in range(5)] for row in range(6)]how to create one list from 2d list python
>>> l = [[1, 2, 3], [4, 5, 6], [7], [8, 9]]
>>> sum(l, [])
[1, 2, 3, 4, 5, 6, 7, 8, 9]We pass in a 2 dimensional list. You should output the 3rd element of the 2nd row.
In a 2 dimensional list, output the 3rd element of the 2nd row.
# remember to account for 0 index
print(variable[1][2])Copyright © 2021 Codeinu
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