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    2 In python 3 5 appeared type annotation option def __init__(self, n) -> None: means that __init__ should always return NoneType and it can be quite helpful if you accidentally return something different from None especially if you use mypy or other similar things But you can ignore it if you prefer the old way to do it
  • function - what is def in Java class - Stack Overflow
    while googling, I find that "def" is used in python and groovy language But, I am using java So, how come it is possible to use keywords like "def" in java class? Is it possible to use other programming languages keywords in java? Please let me know in comment section, if you need any information from my end Any help would be appreciated
  • Is the `def` keyword optional? If so, why use it? - Stack Overflow
    I have noticed that this is extendable to all code - anytime you want to define a variable and set its value, eg var = 2 the def keyword can be safely left out It only appears to be required if not instantiating the variable on creation, ie def var1 so that it can be instantiated as a NullObject Is this the only time def is useful?
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    What is the main difference between class and def in python? Can a class in python interact with django UI (buttons)?
  • python - Uso da função def - Stack Overflow em Português
    def é uma palavra-chave de construção da linguagem, ela não é uma função, ela serve justamente para declarar e definir uma função O seu código, pela indentação postada, não faz o que deseja, Python é sensitivo à indentação





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