python3で文字列反転色々

gistfile1.py

#pythonっぽくない
def reverse1(data):
  result = ""
  for letter in list(data):
    result = letter + result
  return result


# 標準
def reverse2(data):
  return "".join(reversed(list(data)))


# reversed封印
def reverse3(data):
  return "".join([data[i] for i in range(len(data)-1, -1, -1)])


# 3と大してかわらないけど
def reverse4(data):
  return "".join([data[i*-1] for i in range(1, len(data)+1)])


if __name__ == '__main__':
  assert reverse1("abcde") == "edcba"
  assert reverse1("12345") == "54321"
  assert reverse2("abcde") == "edcba"
  assert reverse2("12345") == "54321"
  assert reverse3("abcde") == "edcba"
  assert reverse3("12345") == "54321"
  assert reverse4("abcde") == "edcba"
  assert reverse4("12345") == "54321"