How do I define a function with optional arguments? Asked 13 years, 9 months ago Modified 1 year, 5 months ago Viewed 1.2m times

Jun 15, 2016 · How can I specify the type hint of a variable as a function type? There is no typing.Function, and I could not find anything in the relevant PEP, PEP 483.

To be more general, they "do something" with the passed in method/function. That my include calling it and return its result, iterating over it and returning the resulting joined string, or, as …

Suppose I have a function like: def foo(): x = 'hello world' How do I get the function to return x, in such a way that I can use it as the input for another function or use the variable within...

Jul 11, 2016 · In Python, variables that are only referenced inside a function are implicitly global. If a variable is assigned a new value anywhere within the function’s body, it’s assumed to be a …

202 While I am aware of the duck-typing concept of Python, I sometimes struggle with the type of arguments of functions, or the type of the return value of the function. Now, if I wrote the …

1 Have a look at SymPy: How to define variables for functions, integrals and polynomials. You can define it according to these two ways: a Python function with def as described above a Python …

May 26, 2018 · You can define a function outside of a class and then add it. However, there is a subtle difference in assigning the function to the class or to the instance object.

Jan 29, 2011 · Let's say that a function A is required only by function B, should A be defined inside B? Simple example. Two methods, one called from another: def method_a(arg): …

However, to write to a global variable within a function, you do have to use the global keyword in front of the variable declaration within the function, or else the function will consider it a …