Python 2 and Python 3: Essential Features for Modern Development

Unicode support, print function, division operator, exception handling, and more enable you to harness the power of Python for efficient and up-to-date coding practices. Here's how it changed compared to Python 2.

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Python string Division Operator developers syntax iterable Print Type Hints result

Python 2 VS Python 3:
Essential Features 
for Modern 
Development
Unicode Support
VS
Python 2
Python 3
In Python 2, strings are by 
default ASCII-encoded, and 
Unicode strings need to be 
explicitly declared using 
the u"string" syntax.
Python 3 natively supports 
Unicode strings, allowing you to 
work with text in different 
languages and character sets 
more easily.
Print Function
VS
Python 2
Python 3
In Python 2, print is a 
statement and does not require 
parentheses (e.g., print 
"Hello").
In Python 3, print is a built-in 
function, requiring parentheses 
around the arguments 
(e.g., print("Hello")). This change 
aligns the print statement with 
other function calls.
Division Operator
VS
Python 2
Python 3
In Python 2, dividing two 
integers using the division 
operator (/) truncates the result 
to the nearest floor value, 
resulting in an integer. To obtain 
a float result, you need to use 
the floor division operator (//).
In Python 3, the division operator 
(/) always returns a float result, 
even when dividing two integers. 
This behavior helps avoid 
unexpected results and improves 
the accuracy of mathematical 
operations.
Iteration & Looping
VS
Python 2
Python 3
In Python 2, the traditional 
syntax for looping over iterable
objects is for x in 
xrange(iterable).
Python 3 introduced a simplified 
syntax for looping over iterable
objects using the for x in 
iterable syntax. This syntax is 
more concise and intuitive 
compared to the traditional for x 
in xrange(iterable) syntax in 
Python 2.
Exception Handling
VS
Python 2
Python 3
Python 2 has limited exception 
handling capabilities, lacking the 
'as' keyword and the 'finally' 
clause.
Python 3 improved the exception 
handling syntax, making it more 
consistent and intuitive. The 'as' 
keyword allows capturing the 
exception instance for further 
processing, and the 'finally' 
keyword ensures the execution of 
cleanup code regardless of 
whether an exception occurs.
VS
Type Hints
Python 2
Python 3
Python 2 does not have built-in 
support for type hints, as they 
were introduced in Python 3 to 
enhance code readability and 
maintainability.
Python 3 introduced type hints, 
allowing developers to annotate 
variables, function parameters, 
and return types with type 
information. These hints are 
optional and can be used by static 
type checkers and IDEs for 
improved code analysis.
VS
f-strings
Python 2
Python 3
Python 2 lacks support for f-
strings and typically uses the 
‘format()’ method or the % 
operator for string formatting.
Python 3 introduced f-strings, a 
concise and convenient way to 
format strings. They allow 
embedding expressions inside 
string literals, enclosed by curly 
braces '{}'.
Python 2 and Python 3
Navigating the Development Landscape
In today's rapidly evolving technological landscape, 
understanding the differences between Python 2 
and Python 3 is crucial for successful development 
of applications. And this is why Python 
Development Services have to always be prepared 
for the latest and trending changes to the language 
for better development.
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