␡
- 5.1 Function Definitions
- 5.2 Default Arguments
- 5.3 Variadic Arguments
- 5.4 Keyword Arguments
- 5.5 Variadic Keyword Arguments
- 5.6 Functions Accepting All Inputs
- 5.7 Positional-Only Arguments
- 5.8 Names, Documentation Strings, and Type Hints
- 5.9 Function Application and Parameter Passing
- 5.10 Return Values
- 5.11 Error Handling
- 5.12 Scoping Rules
- 5.13 Recursion
- 5.14 The lambda Expression
- 5.15 Higher-Order Functions
- 5.16 Argument Passing in Callback Functions
- 5.17 Returning Results from Callbacks
- 5.18 Decorators
- 5.19 Map, Filter, and Reduce
- 5.20 Function Introspection, Attributes, and Signatures
- 5.21 Environment Inspection
- 5.22 Dynamic Code Execution and Creation
- 5.23 Asynchronous Functions and await
- 5.24 Final Words: Thoughts on Functions and Composition
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
5.3 Variadic Arguments
A function can accept a variable number of arguments if an asterisk (*) is used as a prefix on the last parameter name. For example:
def product(first, *args):
result = first
for x in args:
result = result * x
return result
product(10, 20) # -> 200
product(2, 3, 4, 5) # -> 120
In this case, all of the extra arguments are placed into the args variable as a tuple. You can then work with the arguments using the standard sequence operations—iteration, slicing, unpacking, and so on.