42 lines
1.1 KiB
Markdown
42 lines
1.1 KiB
Markdown
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---
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title: List Pop Method
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---
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# Pop Function
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The method pop() removes and returns last element from the list. There is an optional parameter, index of the element to be removed from the list.
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If no index is specified, a.pop() removes and returns the last item in the list.
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If the index passed to the pop() method is not in the range, it throws IndexError: pop index out of range exception.
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#### Example Usage
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```py
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cities = ['New York', 'Dallas', 'San Antonio', 'Houston', 'San Francisco'];
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print "City popped is : ", cities.pop()
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print "City at index 2 is : ", cities.pop(2)
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```
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#### Output
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```
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City popped is : San Francisco
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City at index 2 is : San Antonio
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```
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#### Basic Stack Functionality
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The `pop()` method is often used in conjunction with `append()` to implement basic stack functionality in a Python application.
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```py
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stack = []
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for i in range(5):
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stack.append(i)
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while len(stack):
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print(stack.pop())
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```
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#### More Information:
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The official documentation for `pop()` can be found <a href='https://docs.python.org/3.6/tutorial/datastructures.html' target='_blank' rel='nofollow'>here</a>
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