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Program to read names, surnames from a file and arrange them in alphabetical order of surnames

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# Program to read names, surnames from a file and arrange them in alphabetical order of surnames
# and write them in an another file.
n=input("Enter the no of peoples:")
n=int(n)
f1=open("name.d","w")
for i in range (n):
 s=input("Enter the name of people "+str(i+1)+":")
 print(s,file=f1)
f1.close()
f1=open("name.d","r")
name=[]
sname=[]
for k in f1:
 x=k.split()
 name.append(x[0])
 sname.append(x[1])
for j in range (n):
 for i in range(n-j-1):
  if sname[i]>sname[i+1]:
   sname[i],sname[i+1]=sname[i+1],sname[i]
   name[i],name[i+1]=name[i+1],name[i]
f2=open("sname_arranged.d","w")
for k in range (n):
 print(name[k],sname[k],file=f2)
f2.close()

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