python code to separate positive and negative integers

#program to create a text file containing integer numbers then separate positive and negative number
#into separate file using file handling
f=open("numbers.csv","w")
for i in range(8):
    x=int((input("enter the numbers"))
f=open("numbers.csv",'r')
f1=open("positive.csv",'w')
f2=open("negative.csv",'w')
fread=f.read().split(",")
fread().pop()
print(fread)
for i in fread:
            y=int(i)
            if y>=0:
                f1.write(str(y)+",")
            else:
                f2.write(str(y)+",")
f1.close()
f2.close()
f1=open("positive.csv",'r')
f2=open("negative.csv",'r')
print(f1.read())
print(f2.read())