Python 3 vs python 2 what to choose and some basic differences
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python 2 and python 3 are two major versions of the python programming language. python 3 was released as the successor to python 2 with the aim of fixing and improving various aspects of the language. python 3 is not backwards compatible with python 2, which means that code written in python 2 may not work in python 3 without modifications.
here are some key differences between python 2 and python 3:
1. print statement:
python 2:
python 3:
2. integer division:
python 2: would return 2
python 3: returns 2.5
3. unicode support:
python 2: strings are ascii by default, and unicode strings are denoted by the 'u' prefix.
python 3: strings are unicode by default.
4. xrange vs range:
python 2: is used for generating a sequence of numbers, which is more memory efficient for large ranges.
python 3: is removed, and the function behaves like python 2's .
when choosing between python 2 and python 3, it's generally recommended to use python 3 for new projects as it is the future of the language and has more modern features and improvements. however, if you are working on a legacy project that requires python 2 compatibility, you may need to stick with python 2.
here is an example to demonstrate the difference in print statements between python 2 and python 3:
python 2:
python 3:
in this example, the print statement in python 2 does not require parentheses, whereas in python 3, the print statement is a function and requires parentheses.
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