Function Argument And Parameter in Python
Rushikesh J.
QA Automation Engineer @Vinz Global | Robot Framework | Manual Testing, Automation Testing | Python | Selenium | GIT | JIRA | Immediate Joiner | API Testing Using Postman | Jenkins
Parameter is the variable or constant or basically a information that is send to function in order to use inside the function body to perform any operations or to use in any way.
We used parameter inside the parenthesis of the function
Example:
def function_name(num):
? print(num)
function_name(43)
Some time we say same thing parameter and argument
But there is some different between parameter and argument
Diff: b/w Argument And Parameter
Some time we say same thing parameter and argument
But there is some different between parameter and argument
Example:
def function_name(world): # formal value or parameter, receiver
? print(world)
function_name(‘hi’)? ???? #? actual value or argument, sender
Different Types Of Argument in Python
Keyword Argument in Python
Using keyword argument, we can change order of parameter as we mentioned in function declaration.
Example:
def show(name, num):
? print(name)
? print(num)
show(“Rushikesh”, 32)
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# show(32, “Rushikesh”) # not correct
# show(num = 32, name = “Rushikesh”) # correct using keyword argument
Default Parameter / Argument in Python
To provide a default valve in function declaration, that parameter we say that? it is default one.
Example:
def show_name(f_name, l_name=“Jafri”): # default parameter
? print(f_name + l_name)
show_name(“Rushikesh”)? # did not provide value to default parameter
#show_name(“Rushikesh”,”Jethure”)? # override the default parameter
Required Argument in Python
When we set any parameter in function declaration, we have to use that order of position on the time of calling that function that is required.
Example:
def show_value(a, b, c):
? print(“a = ”+a)
? print(“b = ”+b)
? print(“c = ”+c)
show_value(3, 5, 1)
And when set any parameter to get value from user then some time we make parameter as default or optional and other required
Example:
def show_number(num1, num2 = 33):
? print(num1 + num2)
? # num1 is required and num2 is the optional
?
show_number(num2 = 43)
# override num2 but you will get an error, num1 is required