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Editorial Team
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Asked: 2026-06-18T04:06:04+00:00

class RoundFloat(float): def __new__(cls,val): x=float.__new__(cls,round(val,2)) print x, type(x) >>>RoundFloat(1.785) 1.78 <class ‘__main__.RoundFloat’> What is

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class  RoundFloat(float):
  def __new__(cls,val):
    x=float.__new__(cls,round(val,2))
    print x, type(x)

>>>RoundFloat(1.785)
1.78   <class '__main__.RoundFloat'>

What is the meaning of main here?
is the same meaning as in the if __name__="__main__"?

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1 Answer

  1. Editorial Team

    RoundFloat is an attribute of __main__ (the file that is running) hence '__main__.RoundFloat'. If the class came from an imported module, __main__ would be replaced by the module name.

    The purpose of if __name__ == '__main__' is to check whether the module is the top-level script, and if it is, execute a block of code. If it was being imported, that block of code wouldn’t execute, since __name__ would be the name of the module instead.

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