linear_system_solver - Georgios_Koliou.py

#!/usr/bin/env python
# coding: utf-8

print("Author: Georgios Koliou\nContact: georgios.koliou@gmail.com\n")


D = str(input("\n\n Do you want to save this? Type Y for Yes or N for No: "))


if D == "Y":
    F = str(input("\n(The file's name must be [name_file].doc -> Word file or [name_file].txt -> Text file): "))
    file = open (F,"w")
else:
    print("\nOk! Nothing to save!")


if D == "Y":
    file.write("Author: Georgios Koliou\nContact: georgios.koliou@gmail.com\n\n")
else:
    print("")


import numpy as np

R = int(input("\nGive number of rows: "))
C = int(input("\nGive number of columns: "))


if R == C:
    print("\nInsert the elements of the matrix A separated by space: ")
    numeri = list(map(int, input().split()))
elif D == 'Y': 
    file.close() 
    print("\n\nThe matrix is not square! It size is",R,"x",C,"\n\n")
    input("Press ENTER to exit and delete the file")
    import os
    os.remove(F)
    import sys
    sys.exit("AGAIN")
else:
    print("\n\nThe matrix is not square! It's siaze is",R,"x",C,"\n\n")
    input("Press ENTER to exit")
    import sys
    sys.exit("AGAIN")
    
matrice = np.array(numeri).reshape(R, C)
print("\nThe matrix of the linear equations is:\n\n",matrice,)
if D == "Y":
    file.write("\n\nThe matrix of the linear equations is:\n\n")
    file.write(str(matrice))
else:
    print("")


Rb = int(input("\nGive number of rows of column b:\n"))

if Rb == C:
    print("\nInsert the elements of row b separated by space:\n")
elif D == 'Y': 
    file.close()
    print("The number of rows of vector b must be equals with number of column of matrix A,",Rb,"is not equals to",C,)
    input("Press ENTER to exit and delete the file")
    import os
    os.remove(F)
    import sys
    sys.exit("AGAIN")
else:
    print("\n\nVector b has not the right size..\n\n")
    input("Press ENTER to exit")
    import sys
    sys.exit("AGAIN")
    
b = list(map(int, input().split()))
bm = np.array(b).reshape(Rb,1)

print("\nVector b is equals to:\n\n",bm,)

if D == "Y":
    file.write('\n\nVector b is equals to:\n\n')
    file.write(str(bm))
else:
    print("")


x = int(input("\nNumber of variables: "))

if x == R:
    print("\nInsert variables separated by space: ")
elif D == 'Y':
    file.close()
    print("Number of variables is not right..")
    input("Press ENTER to exit and delete the file")
    import os
    os.remove(F)
    import sys
    sys.exit("AGAIN")
else:
    print("\n\nVector x has not the right size..\n\n")
    input("Press ENTER to exit")
    import sys
    sys.exit("AGAIN")
    
var = list(map(str, input().split()))
var1 = np.array(var).reshape(x,1)
print("\nVector x is equals to:\n\n",var1,)

if D == "Y":
    file.write('\n\nVector x is equals to:\n\n ')
    file.write(str(var1))
else:
    print("")


x = np.linalg.solve(matrice, bm)
sol = zip(var, x)
print("\nThe solutions of the Linear Equation System are:\n\n",list(sol),)

if D == "Y":
    file.write('\n\nThe solutions of the Linear Equation System are:\n\n')
    file.write(str(x))
    file.close()
else:
    print("")



input('\n\n\nPress ENTER to exit')