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Program to convert a matrix to a upper triangular form using Gauss elimination method and to find the determinant of the matrix.

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# Program to convert a matrix to a upper triangular form using Gauss elimination method and to
# find the determinant of the matrix.
a=[]
n=input("Enter the dimension of the matrix:")
n=int(n)
for i in range(n):
 r=input("Enter the elements of row "+str(i+1)+" :").split(",")
 r=list(map(float,r))
 a.append(r)
print("The entered matrix is:")
for i in range(n):
 print (a[i])
for c in range(n-1):
 for r in range(c+1,n):
  l=a[r][c]/a[c][c]
  for k in range(n):
   a[r][k]=a[r][k]-l*a[c][k]
s=1.0
print("The entered matrix in upper triangular form is:")
for i in range(n):
 print(a[i])
 s=a[i][i]*s
print ("The determinant of the matrix is:",s)
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