PyFile:EqYieldEq.py
  PyAssignmentStatement
    PyTargetExpression: bb
      PsiElement(Py:IDENTIFIER)('bb')
    PsiWhiteSpace(' ')
    PsiElement(Py:EQ)('=')
    PsiWhiteSpace(' ')
    PyYieldExpression
      PsiElement(Py:YIELD_KEYWORD)('yield')
      PsiWhiteSpace(' ')
      PyReferenceExpression: dd
        PsiElement(Py:IDENTIFIER)('dd')
    PsiErrorElement:Cannot assign to 'yield' expression
      <empty list>
    PsiWhiteSpace(' ')
    PsiElement(Py:EQ)('=')
    PsiWhiteSpace(' ')
    PyReferenceExpression: cc
      PsiElement(Py:IDENTIFIER)('cc')