Answer by Arthur Khazbs for A suitable 'do nothing' lambda expression in python?
In Python 3 you don't even need to define any functions for that. Calling type(None) will return you the NoneType constructor, which you can use for doing nothing: type(None)(). Keep in mind that the...
View ArticleAnswer by Rafa0809 for A suitable 'do nothing' lambda expression in python?
This is the simplest lambda expression: do_nothing = lambda: None No arguments required and the minimal required return.
View ArticleAnswer by Kyle Kelley for A suitable 'do nothing' lambda expression in python?
If you truly want a full do nothing function, make sure to take *args and *kwargs. noop = lambda *args, **kwargs: None In all its glorious action >>> noop = lambda *args, **kwargs: None...
View ArticleAnswer by Thanatos for A suitable 'do nothing' lambda expression in python?
This: def do_nothing(*args): pass is equivalent to: lambda *args: None With some minor differences in that one is a lambda and one isn't. (For example, __name__ will be do_nothing on the function, and...
View ArticleAnswer by Paul for A suitable 'do nothing' lambda expression in python?
Sometimes lambda functions are used for data transformation, and in that case 'do nothing' means to return the input, i.e. lambda x: x To return none you can write lambda x: None
View ArticleA suitable 'do nothing' lambda expression in python?
I sometimes find myself wanting to make placeholder 'do nothing' lambda expressions, similar to saying: def do_nothing(*args): pass But the following syntax is illegal since lambda expressions attempt...
View ArticleAnswer by Anton Ermakov for A suitable 'do nothing' lambda expression in python?
Besides this expressionlambda *args: Nonethere is another graceful expression using Ellipsis:lambda *args: ...This can also be useful in case the function has no arguments (callback for...
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