input: 
  from typing import List
  
  def detect_potential_errors(function_code: str) -> str:
      """ Analyzes the given Python function to detect any potential errors.
      The function should detect issues related to modifying a list while iterating over it.
      >>> detect_potential_errors('def expand_list(list):\\n    for item in list:\\n        list *= 2')
      'The function is attempting to modify the list while iterating over it. This can lead to unexpected behavior and should be avoided. To fix the code, the list should be copied before the iteration takes place.'
      >>> detect_potential_errors('def safe_modify_list(list):\\n    list_copy = list[:]\\n    for item in list_copy:\\n        list *= 2')
      ''
      """
  
output:     lines = function_code.split('\n')
      for i in range(len(lines)):
          if 'for' in lines[i] and 'in' in lines[i]:
              list_var = lines[i].split('in')[1].strip().split()[0]
              for j in range(i + 1, len(lines)):
                  if list_var in lines[j] and ('*=' in lines[j] or '+=' in lines[j] or '-=' in lines[j] or '/=' in lines[j]):
                      return 'The function is attempting to modify the list while iterating over it. This can lead to unexpected behavior and should be avoided. To fix the code, the list should be copied before the iteration takes place.'
      return ''