Variable-length arguments in Python

You may need to process a function for more arguments than you specified while defining the function. These arguments are called variable-length arguments and are not named in the function definition, unlike required and default arguments.

Syntax

Syntax for a function with non-keyword variable arguments is this −

def functionname([formal_args,] *var_args_tuple ):
"function_docstring"
function_suite
return [expression]

An asterisk (*) is placed before the variable name that holds the values of all nonkeyword variable arguments. This tuple remains empty if no additional arguments are specified during the function call.

Example

 Live Demo

#!/usr/bin/python
# Function definition is here
def printinfo( arg1, *vartuple ):
"This prints a variable passed arguments"
print "Output is: "
print arg1
for var in vartuple:
print var
return;
# Now you can call printinfo function
printinfo( 10 )
printinfo( 70, 60, 50 )

Output

When the above code is executed, it produces the following result −

Output is:
10
Output is:
70
60
50

Mohd Mohtashim

Updated on: 30-Jan-2020

5K+ Views

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