# Author:  James Tam

# Version: June 8, 2017
# Replaced sys.stdout.write() with print()

# Version: November 17, 2011 (Python 3.X port)
  
#  A program by James Tam that reads in letter grades from a file 
# and displays the grades onscreen.  



inputFileOK = False
while (inputFileOK == False):
   # Open file for reading, confirm file with user.
   try:
      # Get information about the file name at run time from the user.   
      inputFileName = input("Enter name of input file: ")
      inputFile = open(inputFileName, "r")
      # Update user on what is happening.
      print("Opening file" + inputFileName, " for reading.")
      inputFileOK = True

      # While we haven't read past the end of the file continue reading from
      # it.

      for line in inputFile:
         print(line, end="")
      print("Completed reading of file", inputFileName)
      inputFile.close()
      print("Closed file", inputFileName)

   except IOError:
      print("Error: File", inputFileName, "could not be opened")
   else:
      print("Successfully read information from file", inputFileName)
   finally:
      print("Finished file input and output\n")