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# Python 3: Fibonacci series up to n
>>> def fib(n):
>>>     a, b = 0, 1
>>>     while a < n:
>>>         print(a, end=' ')
>>>         a, b = b, a+b
>>>     print()
>>> fib(1000)
0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987

Functions Defined
       The core of extensible programming is defining functions. Python allows
       mandatory and optional arguments, keyword arguments, and even arbitrary
       argument lists. [85]More about defining functions in Python 3
     *
# Python 3: List comprehensions
>>> fruits = ['Banana', 'Apple', 'Lime']
>>> loud_fruits = [fruit.upper() for fruit in fruits]
>>> print(loud_fruits)
['BANANA', 'APPLE', 'LIME']

# List and the enumerate function
>>> list(enumerate(fruits))
[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]

Compound Data Types
       Lists (known as arrays in other languages) are one of the compound data types
       that Python understands. Lists can be indexed, sliced and manipulated with
       other built-in functions. [86]More about lists in Python 3
     *
# Python 3: Simple arithmetic
>>> 1 / 2
0.5
>>> 2 ** 3
8
>>> 17 / 3  # classic division returns a float
5.666666666666667
>>> 17 // 3  # floor division
5

Intuitive Interpretation
       Calculations are simple with Python, and expression syntax is
       straightforward: the operators +, -, * and / work as expected; parentheses ()
       can be used for grouping. [87]More about simple math functions in Python 3.
     *
# For loop on a list
>>> numbers = [2, 4, 6, 8]
>>> product = 1
>>> for number in numbers:
...    product = product * number
...
>>> print('The product is:', product)
The product is: 384

All the Flow You'd Expect
       Python knows the usual control flow statements that other languages speak --
       if, for, while and range -- with some of its own twists, of course. [88]More
       control flow tools in Python 3
     *
# Simple output (with Unicode)
>>> print("Hello, I'm Python!")
Hello, I'm Python!
# Input, assignment
>>> name = input('What is your name?\n')
What is your name?
Python
>>> print(f'Hi, {name}.')
Hi, Python.

Quick & Easy to Learn
       Experienced programmers in any other language can pick up Python very
       quickly, and beginners find the clean syntax and indentation structure easy
       to learn. [89]Whet your appetite with our Python 3 overview.

   Python is a programming language that lets you work quickly and integrate systems
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Latest News

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     * 2024-06-14 [96]The Python Language Summit 2024: PyREPL -- New default REPL
       written in Python
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Success Stories

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     [108]When an Open Data standard is created and promoted, it's important to
     think why - what change is this trying to drive? What will people do with this
     data that they couldn't do before?

   [109]Saving the world with Open Data and Python by James Baster

Use Python for...

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     * System Administration: [130]Ansible, [131]Salt, [132]OpenStack, [133]xonsh

>>> [134]Python Enhancement Proposals (PEPs): The future of Python is discussed here.
[135]RSS

>>> [136]Python Software Foundation

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