A Routine is a named group of instructions performing some tasks. A routine can always be invoked as well as called multiple times as required in a given program. Show When the routine stops, the execution immediately returns to the stage from which the routine was called. Such routines may be predefined in the programming language or designed or
implemented by the programmer. A Function is the Python version of the routine in a program. Some functions are designed to return values, while others are designed for other purposes. Pythondef displayMessage(): print("Geeks for Geeks") displayMessage() Output: Geeks for GeeksIn the above program, the displayMessage() function is called without passing any arguments to it. Pythondef displayMessage(msg): print("Hello "+msg+" !") msg = "R2J" displayMessage(msg) Output: Hello R2J !In the above program, the displayMessage() function is called by passing an
argument to it. A formal argument is an argument that is present in the function definition. An actual argument is an argument, which is present in the function call.
Pythondef displayMessage(argument1, argument2, argument3): print(argument1+" "+argument2+" "+argument3) displayMessage("Geeks", "4", "Geeks")
Pythondef calculateTotalSum(*arguments): totalSum = 0 for number in arguments: totalSum += number print(totalSum) calculateTotalSum(5, 4, 3, 2, 1)
Pythondef displayArgument(**arguments): for arg in arguments.items(): print(arg) displayArgument(argument1 ="Geeks", argument2 = 4, argument3 ="Geeks")
Here is a program to illustrate all the above cases to pass multiple arguments in a function. Pythondef displayArguments(argument1, *argument2, **argument3): print(argument1) for arg in argument2: print(arg) for arg in argument3.items(): print(arg) arg1 = "Welcome" arg3 = "Geeks" displayArguments(arg1, "to", arg3, agr4 = 4, arg5 ="Geeks !") Output: Welcome to Geeks ('agr4', 4) ('arg5', 'Geeks!')The above program illustrates the use of the variable number of both non-keyword arguments and keyword arguments as well as a non-asterisk argument in a function. The non-asterisk argument is always used before the single asterisk argument and the single asterisk argument is always used before the double-asterisk argument in a function definition. What is the syntax of a function with arbitrary arguments?An arbitrary argument list is a Python feature to call a function with an arbitrary number of arguments. It's based on the asterisk “unpacking” operator * . To catch an arbitrary number of function arguments in a tuple args , use the asterisk syntax *args within your function definition.
What is the arbitrary argument?Python Arbitrary Arguments allows a function to accept any number of positional arguments i.e. arguments that are non-keyword arguments, variable-length argument list.
How do you represent arbitrary arguments?What are Arbitrary Arguments (*args)? If the number of arguments to be passed into the function is unknown, add a (*) before the argument name. Lets say you want to create a function that will sum up a list of numbers. The most intuitive way will be to create that list and pass it into a function, as shown below.
How do you declare arbitrary arguments in Python?Arbitrary Arguments, *args
If you do not know how many arguments that will be passed into your function, add a * before the parameter name in the function definition.
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