IndentationError: unindent does not match any outer indentation level

Question

When I compile the Python code below, I get

IndentationError: unindent does not match any outer indentation level

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Answer 1

It could be because the function above it is not indented the same way. i.e.

class a:
    def blah:
      print("Hello world")
    def blah1:
      print("Hello world")