建站
咨詢
售后
建站咨詢
新聞中心
Python 3.4.0 發(fā)布，此版本包括一系列 3.x 系列的改進，數(shù)百個小的改進和 bug 修復(fù)。
創(chuàng)新互聯(lián)是一家集網(wǎng)站建設(shè),吳川企業(yè)網(wǎng)站建設(shè),吳川品牌網(wǎng)站建設(shè),網(wǎng)站定制,吳川網(wǎng)站建設(shè)報價,網(wǎng)絡(luò)營銷,網(wǎng)絡(luò)優(yōu)化,吳川網(wǎng)站推廣為一體的創(chuàng)新建站企業(yè)，幫助傳統(tǒng)企業(yè)提升企業(yè)形象加強企業(yè)競爭力?？沙浞譂M足這一群體相比中小企業(yè)更為豐富、高端、多元的互聯(lián)網(wǎng)需求。同時我們時刻保持專業(yè)、時尚、前沿，時刻以成就客戶成長自我，堅持不斷學(xué)習(xí)、思考、沉淀、凈化自己，讓我們?yōu)楦嗟钠髽I(yè)打造出實用型網(wǎng)站。
值得注意的更新內(nèi)容如下：
新語法特性:
-
Python 3.4 并未添加任何新的語法特性
其他新特性:
-
pip should always be available (PEP 453).
-
Newly created file descriptors are non-inheritable(PEP 446).
-
command line option for isolated mode(issue 16499).
-
improvements in the handling of codecsthat are not text encodings (multiple issues).
-
A ModuleSpec Type for the Import System (PEP 451). (Affects importer authors.)
-
The marshal format has been made more compact and efficient (issue 16475).
新的庫模塊:
-
asyncio: New provisional API for asynchronous IO (PEP 3156).
-
ensurepip: Bootstrapping the pip installer(PEP 453).
-
enum: Support for enumeration types(PEP 435).
-
pathlib: Object-oriented filesystem paths(PEP 428).
-
selectors: High-level and efficient I/O multiplexing, built upon the select module primitives (part of PEP 3156).
-
statistics: A basic numerically stable statistics library (PEP 450).
-
tracemalloc: Trace Python memory allocations (PEP 454).
庫模塊中重大的改進:
-
Single-dispatch generic functions infunctools (PEP 443).
-
New pickle protocol 4 (PEP 3154).
-
multiprocessing now has an option to avoid using os.fork on Unix (issue 8713).
-
email has a new submodule, contentmanager, and a new Message subclass (EmailMessage) that simplify MIME handling (issue 18891).
-
The inspect and pydoc modules are now capable of correct introspection of a much wider variety of callable objects, which improves the output of the Python help() system.
-
The ipaddress module API has been declared stable
安全改進:
-
Secure and interchangeable hash algorithm(PEP 456).
-
Make newly created file descriptors non-inheritable(PEP 446) to avoid leaking file descriptors to child processes.
-
New command line option for isolated mode, (issue 16499).
-
multiprocessing now has an option to avoid using os.fork on Unix. spawn and forkserver are more secure because they avoid sharing data with child processes.
-
multiprocessing child processes on Windows no longer inherit all of the parent’s inheritable handles, only the necessary ones.
-
A new hashlib.pbkdf2_hmac() function provides the PKCS#5 password-based key derivation function 2.
-
TLSv1.1 and TLSv1.2 support for ssl.
-
Retrieving certificates from the Windows system cert store support for ssl.
-
Server-side SNI (Server Name Indication) support for ssl.
-
The ssl.SSLContext class has a lot of improvements.
-
All modules in the standard library that support SSL now support server certificate verification, including hostname matching (ssl.match_hostname()) and CRLs (Certificate Revocation lists, seessl.SSLContext.load_verify_locations()).
CPython 實現(xiàn)改進:
-
Safe object finalization (PEP 442).
-
Leveraging PEP 442, in most cases module globals are no longer set to None during finalization (issue 18214).
-
Configurable memory allocators (PEP 445).
-
Argument Clinic (PEP 436).
其他的還包括許多 CPython 的優(yōu)化，用法和潛在移植問題，更多內(nèi)容請看發(fā)行說明，新特性介紹或者是更新日志，可以在這里下載最新版本。
下載地址：http://legacy.python.org/ftp//python/
分享名稱：Python3.4.0正式版發(fā)布
網(wǎng)址分享：http://www.dlmjj.cn/article/dpsicip.html
