Results

• PEP 638 -- Syntactic Macros

  ...compilation, plus any additional overhead of macro processing. It is worth noting that the speed of source to bytecode compilation is largely irrelevant for Python performance. Implementation In order to allow transformation of the AST at compile time by Python code, all AST nodes in the compiler will have to be Python objects. To do that efficiently, will mean making all the nodes in the _ast module immutable, so as not degrade performance by much. They will need to be immutable to guarantee ...

• PEP 3147 -- PYC Repository Directories

  ...compilation files Multiple file extensions .pyc Reference implementation References ACKNOWLEDGMENTS Copyright Abstract This PEP describes an extension to Python's import mechanism which improves sharing of Python source code files among multiple installed different versions of the Python interpreter. It does this by allowing more than one byte compilation file (.pyc files) to be co-located with the Python source file (.py file). The extension described here can also be used to support dif...

• Compiler-SIG

  ...compilation and program analysis issues. Unlike most SIGs, it does not have a specific mandate or deliverable. There are several independent projects to develop compilers, type checkers, and related tools. The CPython and JPython distributions also contain compilers, of course; future versions of these compilers will also be discussed on this sig. There will likely be some overlap between the types-sig and the compiler-sig: The compiler will be responsible for implementing the type...

• PEP 3149 -- ABI version tagged .so files

  ...compilation file (.pyc) to be co-located with each source file. This PEP defines an adjunct feature which allows the co-location of extension module files (.so) in a similar manner. This optional, build-time feature will enable downstream distributions of Python to more easily provide more than one Python major version at a time. Background PEP 3147 defined the file system layout for a pure-Python package, where multiple versions of Python are available on the system. For example, where the ...

• About

  ...compilation to machine code. Also, Jython and IronPython (see below) support JIT compilation on their respective virtual machine implementations. Python plays well with others Python can integrate with COM, .NET, and CORBA objects. For Java libraries, use Jython, an implementation of Python for the Java Virtual Machine. For .NET, try IronPython , Microsoft's new implementation of Python for .NET, or Python for .NET. Python is also supported for the Internet Communications Engine (ICE) and many...

• What is Python? Executive Summary

  ...compilation step, the edit-test-debug cycle is incredibly fast. Debugging Python programs is easy: a bug or bad input will never cause a segmentation fault. Instead, when the interpreter discovers an error, it raises an exception. When the program doesn't catch the exception, the interpreter prints a stack trace. A source level debugger allows inspection of local and global variables, evaluation of arbitrary expressions, setting breakpoints, stepping through the code a line at a time, ...

• PEP 236 -- Back to the __future__

  PEP 236 -- Back to the __future__ PEP:236 Title:Back to the __future__ Author:Tim Peters <tim.peters at gmail.com> Status:Final Type:Standards Track Created:26-Feb-2001 Python-Version:2.1 Post-History:26-Feb-2001 Contents Motivation Intent Syntax Semantics Example Standard Module __future__.py Resolved Problem: Runtime Compilation Resolved Problem: Native Interactive Shells Resolved Problem: Simulated Interactive Shells Questions and Answers What about a "from __past_...

• Python Success Stories

  ...compilation of the language itself required cross-compilation. Rewriting the Lua Layouts Once the Python-based implementation of the GUI layout tools was complete, it became necessary to rewrite the existing Lua layouts using Python. Our layout coders embraced Python with open arms because it solved all the problems they had been having with Lua, and it made new code easier to write because of Python's straightforward syntax and extensive standard libraries. In this transition, we found that P...

• Python Success Stories

  ...compilation with each change in the code, and the ability to run code in any recent browser was of no use for this project. Java's verbose syntax as compared to Python was also a point against it. Python was just as portable as Java and a much easier to learn and use language. I'd also read the Python tutorial, seen various Python programs and liked the language very much for its simplicity, object oriented nature, dynamic data typing, and large standard library. Starting with a few simple Pytho...

• Python Distutils-SIG: Requirements

  ...compilation and other processing done) for the major platforms. Module distributions must have a standardized way to express their dependencies on other modules (both simple presence/absence and required version number) and on Python itself (version number), and these dependencies must be checked at setup/build/install time. It must be possible (and preferably easy) to instead download and build from a source dis...

• Python Distutils-SIG: Requirements

  ...compilation and other processing done) for the major platforms. Module distributions must have a standardized way to express their dependencies on other modules (both simple presence/absence and required version number) and on Python itself (version number), and these dependencies must be checked at setup/build/install time. It must be possible (and preferably easy) to instead download and build from a source dis...

• PEP 599 -- The manylinux2014 Platform Tag

  ...Compilation of Compliant Wheels Docker Images Auditwheel Platform Detection for Installers Backwards compatibility with manylinux2010 wheels PyPI Support References Acceptance Copyright Abstract This PEP proposes the creation of a manylinux2014 platform tag to succeed the manylinux2010 tag introduced by PEP 513. It also proposes that PyPI and pip both be updated to support uploading, downloading, and installing manylinux2014 distributions on compatible platforms. Rationale CentOS 6 is now...

• PEP 571 -- The manylinux2010 Platform Tag

  ...Compilation of Compliant Wheels Docker Image Compatibility with kernels that lack vsyscall Auditwheel Platform Detection for Installers Backwards compatibility with manylinux1 wheels PyPI Support Summary of changes to PEP 571 References Copyright Abstract This PEP proposes the creation of a manylinux2010 platform tag to succeed the manylinux1 tag introduced by PEP 513. It also proposes that PyPI and pip both be updated to support uploading, downloading, and installing manylinux2010 distr...

• PEP 263 -- Defining Python Source Code Encodings

  ...compilation. There must not be any Python statement on the line that contains the encoding declaration. If the first line matches the second line is ignored. To aid with platforms such as Windows, which add Unicode BOM marks to the beginning of Unicode files, the UTF-8 signature \xef\xbb\xbf will be interpreted as 'utf-8' encoding as well (even if no magic encoding comment is given). If a source file uses both the UTF-8 BOM mark signature and a magic encoding comment, the only allowed encoding ...

• PEP 339 -- Design of the CPython Compiler

  ...compilation from source code to bytecode involved two steps: Parse the source code into a parse tree (Parser/pgen.c) Emit bytecode based on the parse tree (Python/compile.c) Historically, this is not how a standard compiler works. The usual steps for compilation are: Parse source code into a parse tree (Parser/pgen.c) Transform parse tree into an Abstract Syntax Tree (Python/ast.c) Transform AST into a Control Flow Graph (Python/compile.c) Emit bytecode based on the Control Flow Graph (Pytho...

• Applications for Python

  ...compilation and testing. Roundup or Trac for bug tracking and project management. Business Applications Python is also used to build ERP and e-commerce systems: Odoo is an all-in-one management software that offers a range of business applications that form a complete suite of enterprise management applications. Tryton is a three-tier high-level general purpose application platform.

• PEP 513 -- A Platform Tag for Portable Linux Built Distributions

  ...Compilation of Compliant Wheels Docker Image Auditwheel Bundled Wheels on Linux Security Implications Platform Detection for Installers PyPI Support Rejected Alternatives Future updates References Copyright Abstract This PEP proposes the creation of a new platform tag for Python package built distributions, such as wheels, called manylinux1_{x86_64,i686} with external dependencies limited to a standardized, restricted subset of the Linux kernel and core userspace ABI. It proposes that PyP...

• PEP 578 -- Python Runtime Audit Hooks

  ...compilation. func_new_impl function.__new__ (code,) Detect dynamic creation of function objects. This only occurs for direct instantiation, and is not raised for normal compilation. _ctypes.dlopen, _ctypes.LoadLibrary ctypes.dlopen (module_or_path,) Detect when native modules are used. _ctypes._FuncPtr ctypes.dlsym (lib_object, name) Collect information about specific symbols retrieved from native modules. _ctypes._CData ctypes.cdata (ptr_as_int,) Detect when code is accessing arbitrary memo...

• Python Success Stories

  ...compilation or translation of any kind. Conclusion Python made it possible for Journyx to produce a flexible, feature-rich product for multiple platforms in less time than would have been possible using another language. Python has been an important competitive advantage for us, and even as our Python code base grows in complexity and maturity, the natural advantages of Python enable us to provide a high quality mission critical application at a competitively low cost. About the Authors Curt...

• Python Success Stories

  ...compilation (although static error checking tools like PyChecker are now available for this problem). Another was a result of the very seamless way in which Python casts between object and data types. While this feature allows for quick and flexible code, it is the responsibility of the programmer to make explicit the data types that a function expects. A standard coding style that names variables according to their expected data type is an easy way to address this problem. A 30-day evaluation o...