"""Read and print an integer series."""

import sys


def read_series(filename):
    f = open(filename, mode='rt', encoding='utf-8')
    series = []
    for line in f:
        a = int(line.strip())
        series.append(a)
    f.close()
    return series


def main(filename):
    print(read_series(filename))


if __name__ == '__main__':
    main(sys.argv[1])

"""Read and print an integer series."""

import sys


def read_series(filename):
    try:
        f = open(filename, mode='rt', encoding='utf-8')
        return [int(line.strip()) for line in f]
    finally:
        f.close()


def main(filename):
    print(read_series(filename))


if __name__ == '__main__':
    main(sys.argv[1])

Refactor to ensure closing and also use list comprehension
Refactor to ensure closing and also use list comprehension

  """Read and print an integer series."""
  
  import sys
  
  
  def read_series(filename):
+     try:
-     f = open(filename, mode='rt', encoding='utf-8')
+         f = open(filename, mode='rt', encoding='utf-8')
+         return [int(line.strip()) for line in f]
+     finally:
-     series = []
-     for line in f:
-         a = int(line.strip())
-         series.append(a)
-     f.close()
+         f.close()
-     return series
  
  
  def main(filename):
      print(read_series(filename))
  
  
  if __name__ == '__main__':
      main(sys.argv[1])
  
Refactor to ensure closing and also use list comprehension
## Code Before:
"""Read and print an integer series."""

import sys


def read_series(filename):
    f = open(filename, mode='rt', encoding='utf-8')
    series = []
    for line in f:
        a = int(line.strip())
        series.append(a)
    f.close()
    return series


def main(filename):
    print(read_series(filename))


if __name__ == '__main__':
    main(sys.argv[1])

## Instruction:
Refactor to ensure closing and also use list comprehension
## Code After:
"""Read and print an integer series."""

import sys


def read_series(filename):
    try:
        f = open(filename, mode='rt', encoding='utf-8')
        return [int(line.strip()) for line in f]
    finally:
        f.close()


def main(filename):
    print(read_series(filename))


if __name__ == '__main__':
    main(sys.argv[1])
