投稿時間:2023-06-23 18:30:43 RSSフィード2023-06-23 18:00 分まとめ(35件)

カテゴリー等 サイト名等 記事タイトル・トレンドワード等 リンクURL 頻出ワード・要約等/検索ボリューム 登録日
IT 気になる、記になる… Microsoft、「Windows 11 Insider Preview Build 23486」をDevチャネル向けにリリース https://taisy0.com/2023/06/23/173338.html build 2023-06-23 08:37:12
IT 気になる、記になる… povo2.0、「povo2.0の2023夏キャンペーン」を開始 https://taisy0.com/2023/06/23/173335.html 開始 2023-06-23 08:23:19
ROBOT ロボスタ 自律走行搬送ロボットの経路の最適化シミュレータ開発 最適経路を短時間で算出 DNPアニーリング技術とUltimatrustのデジタルツインで https://robotstart.info/2023/06/23/amr-optimal-path-algorithm.html 2023-06-23 08:50:24
IT ITmedia 総合記事一覧 [ITmedia Mobile] ドコモとレゾナントの合併は「公正競争に弊害をもたらす恐れ」 競合3キャリアやMVNO委員会が表明 https://www.itmedia.co.jp/mobile/articles/2306/23/news160.html ITmediaMobileドコモとレゾナントの合併は「公正競争に弊害をもたらす恐れ」競合キャリアやMVNO委員会が表明電気通信市場検証会議第回にて、NTTドコモとNTTレゾナントの合併について、キャリアとMVNO委員会が見解を表明。 2023-06-23 17:26:00
IT ITmedia 総合記事一覧 [ITmedia News] 話題の古代魚「サカバンバスピス」 模型のイラスト化はNGなの? 弁護士に聞いた https://www.itmedia.co.jp/news/articles/2306/23/news158.html itmedia 2023-06-23 17:17:00
python Pythonタグが付けられた新着投稿 - Qiita 【PySpark】縦持ちデータを横持ちに変換(pivot)してデータを集計してみた https://qiita.com/Tsubasa-Koyama/items/349b104f3f5c7452517d pivot 2023-06-23 17:25:54
python Pythonタグが付けられた新着投稿 - Qiita [React] Next.js 13の中でPythonを動かす https://qiita.com/alecrem/items/54b6d989f8ccf109efe1 nextjs 2023-06-23 17:22:23
python Pythonタグが付けられた新着投稿 - Qiita ChatGPT: Function Callingとベクトル検索を組み合わせて、自社データ検索を実現する https://qiita.com/kuromiya123/items/35f7dc522ecd988015b6 function 2023-06-23 17:12:06
js JavaScriptタグが付けられた新着投稿 - Qiita GoogleMapのMarkerにclickイベントを設定したら、2回呼ばれるので調整 https://qiita.com/n739dev/items/1305c08195311b2228ef constmarkernew 2023-06-23 17:57:49
Ruby Rubyタグが付けられた新着投稿 - Qiita 【Rails】ブックマーク(お気に入り)機能を実装 https://qiita.com/Neko-wo-kau/items/c882799b7b855e2a958f rails 2023-06-23 17:03:56
golang Goタグが付けられた新着投稿 - Qiita Goで複数のバージョンを利用する(goenv不使用) https://qiita.com/pickles/items/266e2e474b317abda43e anyenv 2023-06-23 17:39:35
Ruby Railsタグが付けられた新着投稿 - Qiita 【Rails】resourcesについて https://qiita.com/OzRi/items/b11949bb5dd6c8e75cda progate 2023-06-23 17:15:37
技術ブログ Developers.IO S3 オブジェクト「強力な整合性」の動作について教えてください https://dev.classmethod.jp/articles/tsnote-amazon-s3-strong-read-after-write-consistencymodel/ 起動 2023-06-23 08:45:45
技術ブログ Developers.IO วิธีลบ และ กู้คืน Default VPC https://dev.classmethod.jp/articles/tsnote-thai-vpc-delete-default-resources/ วิธีลบและกู้คืนDefault VPCปัญหาที่เกิดขึ้นมีDefault VPC อยู่บนRegion ที่ไม่ได้ใช้งานผู้ใช้งานสามารถลบทรัพยากรที่เกี่ยวข้องกับVPC ที 2023-06-23 08:40:15
海外TECH DEV Community Read And Write ZIP Files Without Extracting Using zipfile Module https://dev.to/sachingeek/read-and-write-zip-files-without-extracting-using-zipfile-module-2872 Read And Write ZIP Files Without Extracting Using zipfile ModuleHow often do you work with the ZIP files in your day to day life If you ever worked with ZIP files then you would know that a lot of files and directories are compressed together into one file that has a zip file extension So in order to read that files we need to extract them from ZIP format In this tutorial we will implement some Pythonic methods for performing various operations on ZIP files without even having to extract them For that purpose we ll use Python s zipfile module to handle the process for us nicely and easily What is a ZIP file As mentioned above a ZIP file contains one or more files or directories that have been compressed ZIP is an archive file format that supports lossless data compression Lossless compression means that the original data will be perfectly reconstructed from the compressed data without even losing any information If you wonder what is an archive file then it is nothing but computer files that are composed of one or more files along with their metadata This format was originally created in and was first implemented in PKWARE Inc s PKZIP utility as a replacement for the previous ARC compression format by Thom Henderson The ZIP format was then quickly supported by many software utilities other than PKZIP SourceIllustration to show how the files are placed on the disk Source What is the need for a ZIP file ZIP files can be crucial for those who work with computers and deal with large digital information because it allows them toReduce the storage requirement by compressing the size of the files without the loss of any information Improve transfer speed over the network Accumulate all your related files into one archive for better management Provides security by encrypting the files How to manipulate ZIP files using Python Python provides multiple tools to manipulate ZIP files which include some low level Python libraries such as lzma bz zlib tarfile and many others that help in compressing and decompressing files using specific compression algorithms Apart from these Python has a high level module called zipfile that helps us to read write create extract and list the content of ZIP files Python s zipfilezipfile module does provide convenient classes and functions for reading writing and extracting the ZIP files But it does have limitations too like The data decryption process is slow because it runs on pure Python It can t handle the creation of encrypted ZIP files The use of multi disk ZIP files isn t supported currently Opening ZIP files for Reading amp Writingzipfile has a class ZipFile that allows us to open ZIP files in different modes and works exactly as Python s open function There are four types of modes available r Opens a file in reading mode Defaultw Writing mode a Append to an existing file x Create and write a new file ZipFile is also a context manager and therefore supports the with statement Sourceimport zipfilewith zipfile ZipFile sample zip mode r as arch arch printdir File Name Modified Sizedocument txt data txt hello md Here we can see that all the files present in the sample zip folder have been listed Inside ZipFile the first argument we provided is the path of the file which is a string Then the second argument we provided is the mode Reading mode is default whether you pass it or not it doesn t matter Then we called printdir on arch which holds the instance of ZipFile to print the table of contents in a user friendly formatFile NameModifiedSize Error Handling by using Try amp ExceptWe are going to see how zipfile handles the exceptions using the BadZipFile class that provides an easily readable error Provided valid zip filetry with zipfile ZipFile sample zip as arch arch printdir except zipfile BadZipFile as error print error File Name Modified Sizedocument txt data txt hello md Provided bad zip filetry with zipfile ZipFile not valid zip zip as arch arch printdir except zipfile BadZipFile as error print error File is not a zip fileThe first code block ran successfully and printed the contents of the sample zip file because the ZIP file we provided was a valid ZIP file whereas the error was thrown when we provided a bad ZIP file We can check if a zip file is valid or not by using is zipfile function Example valid zipfile is zipfile bad sample zip print valid False Example valid zipfile is zipfile sample zip print valid TrueReturns True if a file is a valid ZIP file otherwise returns False Print content if a file is validif zipfile is zipfile sample zip with zipfile ZipFile sample zip as arch arch printdir else print This is not a valid ZIP format File Name Modified Sizedocument txt data txt hello md if zipfile is zipfile bad sample zip with zipfile ZipFile sample zip as arch arch printdir else print This is not a valid ZIP format file This is not a valid ZIP format file Writing the ZIP fileTo open a ZIP file for writing use write mode w If the file you are trying to write exists then w will truncate the existing file and writes new content that you ve passed in import zipfile Adding a filewith zipfile ZipFile geekpython zip w as myzip myzip write geek txt myzip printdir File Name Modified Sizegeek txt geek txt will be added to the geekpython zip which is created just now after running the code Adding multiple filesimport zipfile Adding multiple fileswith zipfile ZipFile geekpython zip w as myzip myzip write geek txt myzip write program py myzip printdir File Name Modified Sizegeek txt program py Note The file you are giving as an argument to write should exist If you try to create a directory or pass a file that does not exist it will throw a FileNotFoundError import zipfile Passing a non existing directorywith zipfile ZipFile hello geekpython zip w as myzip myzip write geek txt FileNotFoundError Errno No such file or directory hello geekpython zip import zipfile Passing a non existing filewith zipfile ZipFile geekpython zip w as myzip myzip write hello txt FileNotFoundError WinError The system cannot find the file specified hello txt Appending files to the existing ZIP archiveTo append the files into an existing ZIP archive use append mode a import zipfile Appending files to the existing zip filewith zipfile ZipFile geekpython zip a as myzip myzip write index html myzip write program py myzip printdir File Name Modified Sizegeek txt index html program py Reading MetadataThere are some methods that help us to read the metadata of ZIP archives getinfo filename It returns a ZipInfo object that holds information about member file provided by filename infolist Return a list containing a ZipInfo object for each member of the archive namelist Return a list of archive members by name There is another function which is printdir that we already used import zipfilewith zipfile ZipFile geekpython zip mode r as arch myzip arch getinfo geek txt print myzip filename gt gt gt geek txtprint myzip date time gt gt gt print myzip file size gt gt gt print myzip compress size gt gt gt Extracting information about the files in a specified archive using infolist import zipfileimport datetimedate datetime datetimewith zipfile ZipFile geekpython zip r as info for arch in info infolist print f The file name is arch filename print f The file size is arch file size bytes print f The compressed size is arch compress size bytes print f Date of creation date arch date time print The file name is geek txtThe file size is bytesThe compressed size is bytesDate of creation The file name is index htmlThe file size is bytesThe compressed size is bytesDate of creation The file name is program pyThe file size is bytesThe compressed size is bytesDate of creation Let s see some more methodsimport zipfilewith zipfile ZipFile sample zip r as info for arch in info infolist if arch create system system Windows elif arch create system system UNIX else system Unknown print f ZIP version arch create version print f Create System system print f External Attributes arch external attr print f Internal Attributes arch internal attr print f Comments arch comment print ZIP version Create System WindowsExternal Attributes Internal Attributes Comments b ZIP version Create System WindowsExternal Attributes Internal Attributes Comments b ZIP version Create System WindowsExternal Attributes Internal Attributes Comments b create system returned an integer for Windows for UnixExample for showing the use of namelist import zipfilewith zipfile ZipFile geekpython zip r as files for files list in files namelist print files list geek txtindex htmlprogram py Reading and Writing Member filesMember files are referred to as those files which are present inside the ZIP archives To read the content of the member file without extracting it then we use read It takes name which is the name of the file in an archive and pwd is the password used for the encrypted files import zipfilewith zipfile ZipFile geekpython zip r as zif for lines in zif read intro txt split b r n print lines b Hey Welcome to GeekPython b b Are you enjoying it b b Now it s time see you later b We ve added split to print the stream of bytes into lines by using the separator r n and added b as a suffix because we are working on the byte object Other than read we can use open which allows us to read write and add a new file in a flexible way because just like open function it implements context manager protocol and therefore supports with statement import zipfilewith zipfile ZipFile sample zip r as my zip with my zip open document txt r as data for text in data print text b Hey I a document file inside the sample zip folder r n b r n b Are you enjoying it We can use open with write mode w to create a new member file and write content to it and then we can append it to the existing archive import zipfilewith zipfile ZipFile sample zip a as my zip with my zip open file txt w as data file data file write b Hi I am a new file with zipfile ZipFile sample zip mode r as archive archive printdir print for line in archive read file txt split b n print line File Name Modified Sizedata txt hello md document txt file txt b Hi I am a new file Extracting the ZIP archiveThere are methods to extract ZIP archive extractall which allows us to extract all members of the archive in the current working directory We can also specify the path of the directory of our choice import zipfilewith zipfile ZipFile geekpython zip r as file file extractall files All the member files will be extracted into the folder named files in your current working directory You can specify another directory extract allows us to extract a member from the archive to the current working directory You must keep one thing in mind you need to specify the full name of the member or it must be a ZipInfo object import zipfilewith zipfile ZipFile geekpython zip r as file file extract hello txt hello txt will be extracted from the archive to the current working directory You can specify the output directory of your choice You just need to specify path output directory as an argument inside the extract Creating ZIP filesCreating ZIP files is simply writing existing files Creating archive using zipfile modulefiles hello txt geek md python txt with zipfile ZipFile archive created zip w as archive for file in files archive write file or you can simply add files by directly specifying the full name import zipfilewith zipfile ZipFile another archive zip w as archive archive write hello txt archive write geek md archive write python txt Creating ZIP files using shutilWe can use shutil to make a ZIP archive and it provides an easy way of doing it The Shutil module helps in performing high level file operations in Python import shutilshutil make archive archive zip files Here archive is the file name that will be created as a ZIP archive zip is the extension that will be added to the file name and files is a folder whose data will be archived Unpacking the ZIP archive using shutilimport shutilshutil unpack archive archive zip archive Here archive zip is the ZIP archive and archive is the name of the file to be given after the extraction Compressing ZIP filesUsually when we use zipfile to make a ZIP archive the result we get is actually uncompressed because by default it uses ZIP STORED compression method It s like member files are stored in a container that is archived So we need to pass an argument compression inside ZipFile There are types of constants to compress files zipfile ZIP DEFLATED requires a zlib module and compression method is deflate zipfile ZIP BZIP requires a bz module and the compression method is BZIP zipfile ZIP LZMA requires a lzma module and the compression method is LZMA import zipfilewith zipfile ZipFile compressed zip w compression zipfile ZIP DEFLATED as archive archive write geek md archive write python txt archive write hello txt import zipfilewith zipfile ZipFile bzip compressed zip w compression zipfile ZIP BZIP as archive archive write geek md archive write python txt archive write hello txt We can also add a compression level We can give a value between to for maximum compression import zipfilewith zipfile ZipFile max compressed zip w compression zipfile ZIP DEFLATED compresslevel as archive archive write geek md archive write python txt archive write hello txt Did you know that zipfile can run from the command line Run zipfile from Command Line InterfaceHere are some options which allow us to list create and extract ZIP archives from the command line l or list List files in a zipfile python m zipfile l data zip File Name Modified SizeStreamlit Apps master Streamlit Apps master Covid csv Streamlit Apps master Covid Banner png Streamlit Apps master Procfile Streamlit Apps master Readme md Streamlit Apps master WebAppPreview png Streamlit Apps master app py Streamlit Apps master requirements txt Streamlit Apps master setup sh It just works like printdir c or create Create zipfile from source files python m zipfile create shell zip python txt hello txtIt will create a ZIP archive named shell zip and add the file names specified above Creating a ZIP file to archive the entire directorypython m zipfile create directory zip source python m zipfile l directory zip File Name Modified Sizesource source archive source archive hello txt source archive index html source archive intro txt source archive program py source geek md source hello txt e or extract Extract zipfile into the target directory python m zipfile extract directory zip extracted directory zip will be extracted into the extracted directory t or test Test whether the zipfile is valid or not python m zipfile test bad sample zip Traceback most recent call last BadZipFile File is not a zip file ConclusionPhew that was a long module to cover and this article still haven t covered everything However it is sufficient to get started with the zipfile module and manipulate ZIP archives without extracting them ZIP files do have some benefits like they save disk storage and faster transfer speed over a network and more We certainly learned some useful operations that we can perform on ZIP archives with the zipfile module such as Read write and extract the existing ZIP archivesReading the metadataCreating ZIP archivesManipulating member filesRunning zipfile from command lineOther articles you might be interested in if you liked this oneWhat is so special about Python generators and how they work How to convert bytes into a string in Python Understanding the different uses of asterisk in Python Different ways to display web and local images in Jupyter Notebook How to access list items within the dictionary in Python What is the difference between sort and sorted in Python How to use super function in Python classes What are context managers in Python That s all for nowKeep Coding 2023-06-23 08:36:17
ラズパイ Raspberry Pi Welcome home! An original Astro Pi computer back from space is now on display at the Science Museum https://www.raspberrypi.org/blog/astro-pi-computer-back-from-space-is-now-on-display-at-the-science-museum/ Welcome home An original Astro Pi computer back from space is now on display at the Science MuseumAfter seven successful years on the International Space Station vertical miles above our planet the original two Astro Pi computers that we sent to the ISS to help young people run their code in space have been returned to Earth From today one of these Astro Pi computers will be displayed in the Science The post Welcome home An original Astro Pi computer back from space is now on display at the Science Museum appeared first on Raspberry Pi Foundation 2023-06-23 09:00:00
医療系 医療介護 CBnews 病院などの経営情報、決算期迎える法人から報告を-厚労省事務連絡、任意の「職種別給与」も https://www.cbnews.jp/news/entry/20230623170953 医療法人 2023-06-23 17:35:00
海外ニュース Japan Times latest articles Chemical-maker Kao unveils new way to combat mosquitoes https://www.japantimes.co.jp/news/2023/06/23/national/kao-mosquitoes-solution/ Chemical maker Kao unveils new way to combat mosquitoesResearchers found that spraying a solution that allows mosquitoes wings to become wet can prevent them from flying and knock them out of the air 2023-06-23 17:13:38
ニュース BBC News - Home Victor Wembanyama chosen by San Antonio Spurs as first pick in 2023 NBA draft https://www.bbc.co.uk/sport/basketball/65995961?at_medium=RSS&at_campaign=KARANGA Victor Wembanyama chosen by San Antonio Spurs as first pick in NBA draftVictor Wembanyama targets winning an NBA championship ring after the San Antonio Spurs choose him as the number one overall pick in the draft 2023-06-23 08:55:03
ビジネス ダイヤモンド・オンライン - 新着記事 悪口が悪いのは「人を傷つけるから」ではない!哲学が授ける超納得の回答 - ニュースな本 https://diamond.jp/articles/-/320001 2023-06-23 17:15:00
ビジネス 不景気.com 千趣会の23年12月期は42億円の最終赤字へ、無配継続 - 不景気com https://www.fukeiki.com/2023/06/senshukai-2023-loss.html 最終赤字 2023-06-23 08:42:07
ニュース Newsweek マクドナルド店内で、少年らのグループが傍若無人に暴れ回る衝撃映像...店内を破壊し、レジの金を強奪 https://www.newsweekjapan.jp/stories/world/2023/06/post-101975.php 2023-06-23 17:13:00
マーケティング MarkeZine 高校生が考える2023年の流行語予測/Top2は「それな/それなー」「草」【LINE調査】 http://markezine.jp/article/detail/42601 高校生 2023-06-23 17:30:00
マーケティング MarkeZine 人気のスキンケア商品Topは洗顔料/参考にしている情報源、男性は「店」女性は「口コミ」/LINE調査 http://markezine.jp/article/detail/42593 男性 2023-06-23 17:15:00
IT 週刊アスキー 戦国SLG「天下統一」が令和に復活!『天下統一SSB』がWindows向けに7月27日に発売 https://weekly.ascii.jp/elem/000/004/142/4142365/ pcwindows 2023-06-23 17:40:00
IT 週刊アスキー おいしいフルーツタルトがいっぱい! タルト専門店「トルタイシーオ」九州進出 https://weekly.ascii.jp/elem/000/004/142/4142306/ 進出 2023-06-23 17:30:00
IT 週刊アスキー Dropbox、AI検索ツール「Dropbox Dash」ベータ版公開 https://weekly.ascii.jp/elem/000/004/142/4142331/ dropbox 2023-06-23 17:15:00
IT 週刊アスキー 東電、電力7社の停電情報を集約する「停電情報自動配信サービス」 https://weekly.ascii.jp/elem/000/004/142/4142349/ 中国電力 2023-06-23 17:45:00
IT 週刊アスキー 4種類の体勢で座ることができる「座り方自在『ゲーミングあぐらチェア』」 https://weekly.ascii.jp/elem/000/004/142/4142351/ 自在 2023-06-23 17:45:00
IT 週刊アスキー JCB、スマホアプリ「MyJCB」でQR・バーコード決済サービス「MyJCB Pay」開始 https://weekly.ascii.jp/elem/000/004/142/4142347/ myjcb 2023-06-23 17:30:00
マーケティング AdverTimes 大和ハウス「D-ROOM」CMシリーズ刷新 眞栄田郷敦がブランドの化身に https://www.advertimes.com/20230623/article424237/ droom 2023-06-23 08:21:27
マーケティング AdverTimes ミズノ、野球用木製バットをアップサイクル 不適格材を日常的な活用へ https://www.advertimes.com/20230623/article424205/ swingpan 2023-06-23 08:19:14
マーケティング AdverTimes 「ChatGPT」が増加、プレスリリースのキーワード https://www.advertimes.com/20230623/article424196/ chatgpt 2023-06-23 08:16:31
マーケティング AdverTimes ブックオフ「立ち読み」解禁 なかやまきんに君がマナー動画に出演 https://www.advertimes.com/20230623/article424225/ 新型コロナウイルス 2023-06-23 08:11:59
マーケティング AdverTimes 丸亀製麺、初のドライブスルー店舗 “ライブ感”楽しめる店舗設計に https://www.advertimes.com/20230623/article424202/ 丸亀製麺 2023-06-23 08:09:05

コメント

このブログの人気の投稿

投稿時間:2021-06-17 22:08:45 RSSフィード2021-06-17 22:00 分まとめ(2089件)

投稿時間:2021-06-20 02:06:12 RSSフィード2021-06-20 02:00 分まとめ(3871件)

投稿時間:2021-06-17 05:05:34 RSSフィード2021-06-17 05:00 分まとめ(1274件)