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How to write an empty function in Python – pass statement?

  • Difficulty Level : Basic
  • Last Updated : 04 May, 2016

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(): 

We can use pass in empty while statement also.

# Empty loop in Python
mutex = True
while (mutex == True) :

We can use pass in empty if else statements.

# Empty in if/else in Python
mutex = True
if (mutex == True) :
else :

This article is contributed by Shivam Gupta. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above

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