input: Write a function to identify and fix any issues in the provided Python code. The code should correctly sum up the elements in a given list and return the result. If the code is already correct, return the unchanged code.
  def fix_sum_list(code):
      if 'sum = 0' in code:
          code = code.replace('sum = 0', 'sum_list = 0')
      if 'return sum' in code:
          code = code.replace('return sum', 'return sum_list')
      if 'def sum_list(list):' in code and 'return sum_list' in code:
          return code
      else:
          return "Provided code is incorrect and cannot be automatically fixed."
  
  assert fix_sum_list("def sum_list(list):\n    sum_list = 0\n    for num in list:\n        sum_list += num\n    return sum")=="def sum_list(list):\n    sum_list = 0\n    for num in list:\n        sum_list += num\n    return sum_list"
  assert fix_sum_list("def sum_list(list):\n    sum_list = 0\n    for num in list:\n        sum_list += num\n    return sum_list")=="def sum_list(list):\n    sum_list = 0\n    for num in list:\n        sum_list += num\n    return sum_list"
  assert fix_sum_list("def sum_list(list):\n    sum = 0\n    for num in list:\n        sum += num\n    return sum")=="def sum_list(list):\n    sum_list = 0\n    for num in list:\n        sum_list += num\n    return sum_list"
  assert fix_sum_list("")=="Provided code is incorrect and cannot be automatically fixed."
output: def fix_sum_list(code):
      if 'sum = 0' in code:
          code = code.replace('sum = 0', 'sum_list = 0')
      if 'return sum' in code:
          code = code.replace('return sum', 'return sum_list')
      if 'def sum_list(list):' in code and 'return sum_list' in code:
          return code
      else:
          return "Provided code is incorrect and cannot be automatically fixed."