Editor issues when coding python

[homayounshahri]

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When I hit enter the next line is indented and spaces are inserted to indent the line and I get an error: IndentationError: Expected an indentation block. I need to delete the spaces and hit 'Tab' and then I don't get the error anymore. Could you please fix this issue so that either the indentations are Tab based or that Spaces are also admissible?

Thanks in advance.