create 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)create 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)python convert two dimensional list to one dimensional
# Python convert 2D into 1D array:
import itertools
x = [['foo'], ['bar', 'baz'], ['quux'], ("tup_1", "tup_2"), {1:"one", 2:"two"}]
print list(itertools.chain(*x))
print [element for sub in x for element in sub]
# Output:
['foo', 'bar', 'baz', 'quux', 'tup_1', 'tup_2', 1, 2]how 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 rowstwo dimensional array python
# Creates a list containing 5 lists, each of 8 items, all set to 0
w, h = 8, 5;
Matrix = [[0 for y in range(h)] for x in range(w)]
Matrix[0][0] = 1
Matrix[0][6] = 3 # error! range...
Matrix[6][0] = 3 # valid2d 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)]2d list in python
def list_2D(r, c):
l = []
for i in range(r):
x = [0] * c
l.append(x)
return lCopyright © 2021 Codeinu
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