Join Steven Lott for an in-depth discussion in this video Next steps, part of Migrating from Python 2.7 to Python 3.
- [Narrator] I hope that you've decided it's time…to migrate your codebase from Python 2 to Python 3.…I've shown almost all the changes that need to be made…and I hope I've also provided some assurance…that most of your code will not have to change dramatically.…I see three measurable benefits from using Python 3.…First, and most importantly,…Python 3 is a lot faster than Python 2.…In the early days of Python 3.5,…I collected the what's new documents…and counted almost 40 different places…where performance has been improved.…
Python 3.6 adds even more improvements to this list.…Second, Python 3 is bigger, it adds at least…a dozen new packages to the standard library.…New packages like enum, pathlib…and statistics are extremely helpful.…Third, Python 3 is internally simpler.…This means that it removes…some quirky behaviors of Python 2.…As one example, the complete separation…of Unicode text from sequences of bytes…can help prevent bugs from arising.…
There are two potential benefits to doing a migration.…One is the opportunity to improve code quality.…
Author
Steven Lott
Released
3/24/2017- Reviewing the differences between the two versions
- Reviewing the syntax changes introduced with Python 3
- Understanding the changes to built-in functions
- Reviewing the most important changes to the Python standard library
- Understanding which tools are required to migrate from Python 2.7 to Python 3
- Using six to handle class definitions
- Using six with standard library changes
- Using future
- Making syntax changes and class changes with futurize
- Using 2to3 or modernize
Skill Level Intermediate
Duration
Views
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Introduction
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Welcome49s
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1. Python 2.7 and Python 3
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Introduction to the course4m 21s
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Overview of the differences7m 47s
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The official how-to guide5m 48s
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2. Feature Comparisons
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The language syntax changes9m 34s
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3. Three Plus One Strategies
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Coexistence: 2to3 and 3to24m 22s
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4. Using Six
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Syntax wrapping with six5m 26s
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5. Using Python-Future
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6. Using 2to3 or Modernize
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Final thoughts6m 35s
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Conclusion
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Next steps1m 52s
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Video: Next steps