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python 3

Python 3 is a version of the Python programming language. As of my last knowledge update in September 2021, Python 3 was the latest major version of Python, and it introduced several significant changes and improvements compared to Python 2. Some key features and differences in Python 3 include:

  1. Print Statement: In Python 3, the print statement became a print function, meaning you need to use parentheses when printing something. For example:Python 2:pythonCopy codeprint "Hello, World!" Python 3:pythonCopy codeprint("Hello, World!")
  2. Division: In Python 3, division of integers produces a float result by default. In Python 2, integer division would truncate the result to an integer.Python 3:pythonCopy coderesult = 5 / 2 # Results in 2.5 Python 2:pythonCopy coderesult = 5 / 2 # Results in 2
  3. Unicode: Python 3 handles strings as Unicode by default, whereas Python 2 used ASCII strings. This makes working with non-ASCII characters and internationalization easier in Python 3.
  4. xrange() Removed: Python 2 had both range() and xrange() for creating sequences of numbers. In Python 3, range() behaves like Python 2’s xrange(), so you don’t need to worry about which one to use.
  5. Exception Handling: In Python 3, exceptions must be enclosed in parentheses. For example:Python 2:pythonCopy codeexcept MyException, e: Python 3:pythonCopy codeexcept MyException as e:
  6. Iterable Methods: Python 3 introduced some new built-in functions and methods to work with iterators and iterables, such as zip(), map(), and filter() returning iterators instead of lists.

It’s important to note that Python 2 reached its end of life on January 1, 2020, and is no longer actively maintained or updated. Therefore, it’s highly recommended to use Python 3 for all new Python projects.

Please keep in mind that developments in programming languages and their versions may have occurred after my last knowledge update in September 2021, so it’s a good practice to refer to the official Python website or documentation for the most up-to-date information on Python 3 and any subsequent versions.

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