Example: Matrix Pattern in Python language using For loop

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# Matrix Pattern in Python language using For loop

x, i, j, k, d, m = None, None, None, None, 1, None
# x - denotes the number of rows

print ("-----Enter the total number of rows-----")
x = int (input ())

mat = []

for i in range (x):
	j = i
	k = 0
	for j in range (i, -1, -1):
		mat.append([])
		mat[k].append(d)
		d = d + 1
		k = k + 1

for k in range (1, x):
	i = m = k
	for j in range (x - 1, m - 1, -1):
		mat[i].append(d)
		d = d + 1
		i = i + 1

print ("\n-----The matrix pattern-----\n")

for i in range (x):
	print (end="\t")
	for j in range (x):
		print (mat[i][j], end="\t")
	print (end="\n\n")