Old:print"The answer is", 2*2 New:print("The answer is", 2*2) Old:printx,#使用逗号结尾禁止换行 New:print(x, end="")#使用空格代替换行 Old:print#输出新行 New:print()#输出新行 Old:print>>sys.stderr,"fatal error" New:print("fatal error", file=sys.stderr) Old:print(x, y)#...
Kuchling, A M
Python 2.7 is planned to be the last of the 2.x releases, so we worked on making it a good release for the long term. To help with porting to Python 3, several new features from the Python 3.x series have been included in 2.7....
One of the new features in Python 3.12 is the new type annotation syntax for generic classes, described inPEP 695. This syntax allows you to express type parameters for generic classes like list, dict, tuple, and so on using square brackets instead of parentheses. For example, instead of wr...
The URL scheme supports a new?exec=...parameter that allows creating URLs that contain encoded Python source code. It is also possible to create an “exec” URL directly from a script in the editor (“Wrench” -> Share -> Create Executable URL). ...
What’s New in Python 2.7 — Python 3.4.0b2 documentation PEP 372: Adding an Ordered Dictionary to collections¶ Regular Python dictionaries iterate over key/value pairs in arbitrary order. Over the years, a number of authors have written alternative implementations that remember the order that ...
More and faster: New proposals changing Python from within Apr 11, 20252 mins feature What is Kubernetes? Scalable cloud-native applications Apr 9, 202517 mins opinion Making Python faster won’t be easy, but it’ll be worth it Apr 2, 20256 mins ...
Python 3.9 rolled out an entirely new parser— faster, more robust, easier for the Python team to maintain, and less riddled with internal hacks. One big bonus the new parser offers developers is far more precise and useful error messages. In Python 3.8, the following code would generate a...
Appendix C. What's New in Python 3.1 Python is constantly changing in little ways. Python 3.1 has evolved from version 2.6, but it contains important changes. This appendix introduces you to the changes relevant to the topics covered in this book. This means that this is not an exhaustive ...
Python 3.8 is going to be released in October 2019 but you can taste it now. Currently the latest available version ispython 3.8b2(which is feature freezed). So what's new in Python 3.8? f-string = In python 3.8 you can output debug information more eloquently using f-string feature whi...