In C/C++ and Java, we can write empty function as following

// An empty function in C/C++/Java
void fun() {  }

In Python, if we write something like following in Python, it would produce compiler error.

# Incorrect empty function in Python
def fun():

Output :

IndentationError: expected an indented block

In Python, to write empty functions, we use pass statement. pass is a special statement in Python that does nothing. It only works as a dummy statement.

# Correct way of writing empty function
# in Python
def fun():
	pass

We can use pass in empty if else statements.

# Empty in if/else in Python
mutex = True
if (mutex == True) :
	pass
else :
	print("False")