Python 2 vs. Python 3: Key Differences

Python has become one of the most widely used programming languages, powering web applications, data science, automation, and more. However, developers often face a dilemma when choosing between Python 2 vs Python 3 Key Differences. While Python 2 was once dominant, Python 3 has emerged as the evolving standard, offering better performance, security, and modern features. At TCCI-Tririd Computer Coaching Institute, we ensure students master Python by understanding the key differences between both versions.

1. Python 2 vs. Python 3: Introduction

Python 2 became available in the year 2000 and was the base for many an application. Its life span finished in the year 2020, and hence it is no longer maintained or updated. Python 3 began its life in 2008 and, therefore, is the path whereas at an advanced stage; it is better in features and performance with better security.

2. Key Differences Between Python 2 and Python 3

2.1 Print Statement vs Print Function

Python 2: Uses print as a statement:

print "Hello, World!"

Python 3: Uses print as a function:

print("Hello, World!")

2.2 Integer Division

Python 2: Integer division returns an integer:

print 5 / 2  # Output: 2

Python 3: Uses true division by default:

print(5 / 2)  # Output: 2.5

2.3 Unicode Support

Python 2: The default string type is ASCII; it's sometimes quite a little effort to handle the Unicode.

Python 3: Strings are Unicode by default, which means applications can be developed either wasting time on custom APIs or make use of these built-in Unicode features straight to support global purposes.

2.4 Iterating Over Dictionaries

Python 2: Uses dict.iteritems(), dict.iterkeys(), and dict.itervalues().

Python 3: Uses dict.items(), dict.keys(), and dict.values() directly.

2.5 xrange vs range

Python 2: The native loop constructs of Python 2 use the efficient memory outside the hooks of the focus.

Python 3: Merges xrange() into range().

2.6 Exception Handling

Python 2: Uses the older syntax:

try:

    x = 1 / 0

except Exception, e:

    print e

Python 3: Uses modern syntax:

try:

    x = 1 / 0

except Exception as e:

    print(e)

3. Reasons for Using Python 3

• For the Future: Python 2 is no longer supported.
• Performance: It is far better and fast.
• Modernistic: It packages its own modern features such as type hints, f-strings, and async programming.
• Security: This is regular update windows keep Python secure.

4. Conclusion

If you are being introduced to Python, Python 3 is your pick. At TCCI-Tririd Computer Coaching Institute, a clear path is provided to gain expertise in Python programming starting from the basic to the advanced topics. In the programming world, one can never go wrong learning Python 3 for beginners and experienced coders alike.

Location: Bopal & Iskon-Ambli Ahmedabad, Gujarat

Call now on +91 9825618292

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FAQs

Q1: Can I still use Python 2 for development?

 A: It's really not recommended because it's no longer being updated or receiving security patches.

Q2: What advantages does Python 3 have over 2?

A: Unicode support, better performance, enhanced security, and cleaner syntax are features of Python 3.

Q3: Is Python 3 harder to learn than 2?

A: On the contrary, it is more friendly to the user and easy for beginners.

Q4: Is old Python 2 code going to work in Python 3?

A: Not completely. You will require to adjust some few things to make it work, but there are tools such as 2to3 to help.

Q5: Where can I learn Python 3?

A: The best training institute offering Python is TCCI-Tririd Computer Coaching Institute!