truth.py 文件源码

def __str__(self):
    stack_iter = iter(self._stack)
    for stack in stack_iter:
      # Find the caller of AssertThat(...).
      if stack[3] == 'AssertThat':
        caller = next(stack_iter)
        return ('{0}({1}) created in module {2}, line {3}, in {4}:\n'
                '      {5}'
                .format(self.__class__.__name__, self._GetSubject(),
                        inspect.getmodulename(caller[1]),   # Module name.
                        caller[2],                          # Line number.
                        caller[3],                          # Function name.
                        caller[4][0].strip()))              # Code snippet.

    # The subject was not created by AssertThat().
    return '{0}({1})'.format(self.__class__.__name__, self._GetSubject())