filename = raw_input("Enter file name: ")

in_file = open(filename, "r")
out_file = open("newcode.py", "w")

while 1:
    line = in_file.readline()
    if not line:
        break
    #replace solution with computerchoice
    newline = line.replace("solution", "computerchoice")
    #save line to new (output) file
    out_file.write(newline)
    
in_file.close()
out_file.close()