Está aparecendo essa mensagem de erro para mim
---------------------------------------------------------------------------
OSError Traceback (most recent call last)
<ipython-input-8-585f0057dc04> in <module>()
----> 1 km = np.loadtxt('carros-km.txt')
2 frames
/usr/local/lib/python3.7/dist-packages/numpy/lib/_datasource.py in open(self, path, mode, encoding, newline)
533 encoding=encoding, newline=newline)
534 else:
--> 535 raise IOError("%s not found." % path)
536
537
OSError: carros-km.txt not found.
O que pode ser?