text: some = 1
  f'text'
  
  f'{some}'
  
  def f():
      return f'{yield some}'
  
  f"result: {f'{some}'}"
  f'{{text {some} }}'
  f'{some + 1}'
  
  f"Has a :"
  
  f'{1:{"{"}>10}'
  
  fr'{some}'
  f'\n'
  
  f'space between opening braces: { {thing for thing in (1, 2, 3)}}'
  
  print(f'''first: {f'second {some}'}''')
  
  f'{some!r:{some}}'
  
  f'{some:#06x}'
  
  f'''
  {
      1}
  '''
  f'{{nothing'
  
  f'Hello \'{f"{some}" + "example"}'
  
  f'{3.14:!<10.10}'
  
  f'''{1+
  1
  }'''
  
  f'\N{GREEK CAPITAL LETTER DELTA}'
  
  f'\{1}'
  
  f'{a:{{}}}'
  
  f'{(lambda x: x + 1)(1)}'
  
  f"{[1,2,1][1:]}"
  