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    Never let your IDE dictate what code you write? Commented Aug 27, 2014 at 11:24
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    By the way: using a proper python IDE (e.g. PyCharm), setting the attributes in the __init__ already provides autocompletion etc. Also, using None prevents the IDE to infer a better type for the attribute, so it's better to use a sensible default instead (when possible). Commented Aug 27, 2014 at 17:39
  • If it is just for autocompletion you can use type hinting, and the additional docstrings will be a plus too. Commented Feb 12, 2018 at 19:20
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    "Never let your IDE dictate what code you write" is a debated issue. As of Python 3.6 there's in-line annotations and a typing module, which allow you to provide hints to the IDE and linter, if that sort of thing tickles your fancy... Commented Apr 30, 2018 at 13:57
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    These assignments at class level have no effect on the rest of the code. They have no effect on self. Even if self.name or self.age were not assigned in __init__ they would not show up in the instance self, they only show up in the class Person. Commented May 27, 2018 at 9:15