A function is a block of code that only runs when it is called. You can pass data, known as parameters, into a function. Furthermore, it avoids repetition and makes the code reusable.
Creating a Function
def Function_name():
print("Hello from a function")
Calling a Function
def first_function():
print("Hello from a function")
first_function()
Function with arguments
def second_function(name):
print(name + "satyam")
second_function("satyam")
Function with arbitrary arguments, *args
def third_function(*names):
print("The second person is " + names[2])
third_function("Emil", "Tobias", "Linus")
Function with arbitrary keyword arguments, **kwargs
def fouth_function(**name):
print("His last name is " + name["lname"])
fouth_function(fname = "satyam", lname = "sharma")
Function with default parameter value
def fifth_function(country = "China"):
print("I am from " + country)
fifth_function("Sweden") // its prints Sweden
fifth_function("India") // its prints India
fifth_function() // its prints China
Basically, we can divide functions into the following two types:
Built-in functions: Functions that are built into Python.
User-defined functions: Functions defined by the users themselves.
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