Решение задачи File 10

import random

def CountF(fname):
    N = 0
    try:
        with open(fname,'r') as f:
            for line in f:
                N += 1
                #print(N,":",line)
    except IOError:
        return -1
    finally:
        return N

def GetLineN(fname,N):
    line = ""
    k = 0
    try:
        with open(fname,'r') as f:
            for line in f:
                k += 1
                if k == N:
                    break
    except IOError:
        print('Open error: ',file1)
    return line.strip()


file1 = "file10_1.txt"
file2 = "file10_2.txt"
print("Input file: ",file1)
print("Output file: ",file2)
print()

N = CountF(file1)
print("Number of records:",N)
while N > 0:
    last_line = GetLineN(file1,N)
    try:
        f = open(file2, "a")
        try:
            f.write(last_line+"\n")
        finally:
            f.close()
    except IOError:
        print('Write error: ',file2)
    N -= 1
									

program File10;
var
 S:String;
 F_in,F_out: File of Integer;
 i,temp,len:integer;
begin
  Write('File1: ');
  Readln(S);
  Assign(F_in,S);
  Reset(F_in);
  Write('File2: ');
  Readln(S);
  Assign(F_out,S);
  ReWrite(F_out);
  len:=1;
  while (not eof(F_in)) do
   begin
    Read(F_in,temp);
    inc(len);
   end;
  while (len>0) do
   begin
    Close(F_in);
    Reset(F_in);
    i:=1;
    while (not eof(F_in)) and (i<>len) do
     begin
      Read(F_in,temp);
      inc(i);
     end;
    Write(F_out,temp);
    dec(len);
   end;
  Close(F_in);
  Close(F_out);
end.