I am trying to do some practice work on List comprehension. How would I use List comprehension in the code below? I have tried and failed. x is a list of c coordinates and y is a list of corresponding y coordinates. There are only 3 coordinates Thanks

x=
for i in range (3): # 3 because we need three x coordinates
x.append (int(input())) # stores your x coordinates
y=
for j in range (3): # 3 because we need the three equivalent/corresponding y coordinates
y.append(int(input()))

Thanks Roy that’s useful. I shall copy that and save it. The whole code is as shown below just to give you the whole flavour. It works. Ijust want to improve using list comprehension. I tried what you suggested butit did not work. Excuse the amateurishness. I intend to upload this together with the normal calculation if that’s OK with you

print(’’’ This is a code for calculating the area of a parallelogram given three coordinates’’’)
print (’’‘you may get a negative answer depending on whiich coords you choose first’’’)

print (’’‘Please enter your first x coordinate, then press enter, then your second x coordinate, press
enter then your third x cordinate. Then repeat for your y coordinates and then a final enter’’’)

x=
for i in range (3): # 3 because we need three x coordinates
x.append (int(input())) # stores your x coordinates
y=
for j in range (3): # 3 because we need the three equivalent/corresponding y coordinates
y.append(int(input())) # stores your y coordinates
x.append(x[0]) #appends the first x coordinate to the end
y.append(y[0]) #appends the first ycoordinate to the end
print (x)
print (y)
a=x[0]*y[1]+x[1]*y[2] +x[2]*y[3] #cross/diagonally multiplying x and y coordinate from left to right
print (a)
b =x[3]*y[2]+x[2]*y[1] +x[1]*y[0] #cross/diagonally multiplying x and y coordinate from right to left
print(b)
c= a - b
print(" area = “, c, " square units”)