input: from typing import List
  
  
  def fix_syntax_errors(code_snippet: str) -> str:
      """ Develop an algorithm to detect and fix Python syntax errors in a given code snippet.
      >>> fix_syntax_errors("def test ():\n    x = 5\n    y = 3\n    z")
      "def test():\n    x = 5\n    y = 3\n    try:\n        z\n    except NameError:\n        print(\\"NameError: Name 'z' is not defined\\")"
      """
output:     lines = code_snippet.split('\n')
      fixed_lines = []
      for line in lines:
          if ':' in line and not line.endswith(':'):
              line = line.rstrip() + ':'
          if '=' in line and '==' not in line:
              line = line.replace('=', '=')
          fixed_lines.append(line)
      fixed_code = '\n'.join(fixed_lines)
      return fixed_code