Python

Generators

DISK = {'file1.txt': """Some say the world will end in fire,\n
Some say in ice.\n
From what I’ve tasted of desire\n
I hold with those who favor fire.\n
But if it had to perish twice,\n
I think I know enough of hate\n
To say that for destruction ice\n
Is also great\n
And would suffice."""}

def read_lines(filename):
  # modify this function to yield each line
  data = DISK[filename]
  return data

line_reader = read_lines("file1.txt") # Reads entire content

for line in line_reader: # works incorrectly right now
  print(line)


DISK = {'file1.txt': """Some say the world will end in fire,\n
Some say in ice.\n
From what I’ve tasted of desire\n
I hold with those who favor fire.\n
But if it had to perish twice,\n
I think I know enough of hate\n
To say that for destruction ice\n
Is also great\n
And would suffice."""}

def read_lines(filename):
  data = DISK[filename]
  lines = data.split("\n")
  for line in lines:
    yield line

line_reader = read_lines("file1.txt")

for line in line_reader:
  print(line)
