text: 
  class Q1Exception(Exception):
      '''
      Base for Q1Pulse exceptions.
      '''
      pass
  
  class Q1InternalError(Q1Exception):
      '''
      Raised when something unexpected fails in Q1Pulse
      most likely caused by coding error in Q1Pulse.
      '''
  
  
  class Q1NameError(Q1Exception):
      '''
      Raised when a register is not defined, or already defined.
      '''
      pass
  
  class Q1TypeError(Q1Exception):
      '''
      Raised when expression or argument types do not match.
      '''
  
  class Q1ValueError(Q1Exception):
      '''
      Raised when invalid value is passed.
      '''
  
  class Q1CompileError(Q1Exception):
      '''
      Raised when the error is detected during compilation.
      '''
  
  class Q1SequenceError(Q1Exception):
      '''
      Raised when the error is detected during compilation.
      '''
      def __init__(self, msg, traceback):
          self.msg = msg
          self.traceback = traceback
  
  class Q1MemoryError(Q1Exception):
      '''
      Raised when no free register is left to allocate.
      '''
  
  class Q1TimingError(Q1Exception):
      '''
      Raised when the timing of commands doesn't fit.
      '''
  
  class Q1StateError(Q1Exception):
      '''
      Raised when program or sequence is modified after compilation.
      '''
  