is it a bug?

[akbarasghar]

Hi. I started python today #I'm a noob

this is my code
X1=3.145
X2=X1-int(X1) # so it must be 3.145-3.000 =0.145

Y1=7.145
Y2=Y1-int(Y1) # and the results must be 0.145

# X2 and X1 must be equal ! but why they aren't ?

#question 1 : WHY?
#question 2 : what should I do ?