Which is more preferable to use: lambda functions or nested functions (“def”)?

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I mostly use lambda functions but sometimes use nested functions that seem to provide the same behavior.

Here are some trivial examples where they functionally do the same thing if either were found within another function:

Lambda function

>>> a = lambda x : 1 + x
>>> a(5)
6

Nested function

>>> def b(x): return 1 + x

>>> b(5)
6

Are there advantages to using one over the other? (Performance? Readability? Limitations? Consistency? etc.)

Does it even matter? If it doesn"t then does that violate the Pythonic principle:

There should be one-- and preferably only one --obvious way to do it..

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We hope this article has helped you to resolve the problem. Apart from Which is more preferable to use: lambda functions or nested functions (“def”)?, check other code Python module-related topics.

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Angelo OConnell

Milan | 2023-02-07

I was preparing for my coding interview, thanks for clarifying this - Which is more preferable to use: lambda functions or nested functions (“def”)? in Python is not the simplest one. I am just not quite sure it is the best method

Manuel Zelotti

Paris | 2023-02-07

os Python module is always a bit confusing 😭 Which is more preferable to use: lambda functions or nested functions (“def”)? is not the only problem I encountered. I am just not quite sure it is the best method

Anna Gonzalez

New York | 2023-02-07

Maybe there are another answers? What Which is more preferable to use: lambda functions or nested functions (“def”)? exactly means?. Will use it in my bachelor thesis

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