On Ubuntu, how do you install a newer version of python and keep the older python version? -

-

पृष्ठभूमि:

  • मैं उबुंटू का उपयोग कर रहा हूं
  • नया अजगर
  • मैं कमांड लाइन से "अजगर" को कॉल करते समय पुराने संस्करण को डिफ़ॉल्ट अजगर के रूप में रखने की योजना बना रहा हूं
  • मैं योजना बना रहा हूं PythonX.X (XX नया संस्करण है) का उपयोग कर नए अजगर को कॉल करने पर।

पृष्ठभूमि को देखते हुए, आप अजगर का एक नया संस्करण कैसे स्थापित करते हैं और पुराने अजगर संस्करण ?

मैंने python.org से "स्रोत से इंस्टॉल" * .tgz पैकेज डाउनलोड किया है। रीडमेम बहुत आसान है और कहते हैं, "तीन आज्ञाएं निष्पादित करें: ./configure; बनाओ; परीक्षा करें, सुडो को स्थापित करें";

अगर मैं उपरोक्त आदेशों को करता हूं, तो क्या पुराने संस्करण अजगर मेरे पास (मुझे निश्चित रूप से पुराने संस्करण की आवश्यकता है)?

जब आप से इंस्टॉल करते हैं स्रोत, डिफ़ॉल्ट रूप से, अधिष्ठापन / usr / local में जाता है - विशेष रूप से निष्पादन योग्य हो जाता है /usr/local/bin/pythonX.Y इसे सिमलिंक के साथ किया जाता है नामित / usr / local / python । उबंटु की अपनी स्थापना / usr / (जैसे, / usr / bin / python ) में है, इसलिए नई स्थापना इसे अधिलेखित नहीं करेगी। ध्यान रखें कि PATH परिवेश चर में / usr / local / bin से पहले / usr / bin नहीं है, या अन्य का उल्लेख सरल है < कोड> अजगर होगा एक नया निष्पादित करें, पुराने नहीं।


Comments

Post a Comment

Popular posts from this blog

windows - Heroku throws SQLITE3 Read only exception -

-
After I deploy the app to Heroku, I have to run migration scripts and get this error message ... ITES \ padrino \ prophetmargin & gt; Heroku Rack AR: Rack mutated! SQLite3 :: ReadOnlyException: only one try to write database to read: CREATE TABLE "schema_migrations" ( "version" varchar (255) NOT NULL) /disk1/home/slugs/215264_925fd2c_65a3/mnt/.bundle/gems/gems/ padrino-core- is 0.9.11 / lib / padrino-core / cli / rake.rb: 9: in `init ' how can this be? I also tried to run Heroku dbpush SQLite: //db/my-db.db and that did not work Horoku sqlite3 but using postgres does not do. I'm not sure why you are receiving this error, however, as I have used sqlite3 in development and when pushing it into its travel, they do some magic which migrates to postgrads. I'm absolutely sure how Heroku does 'backwash' this database but it seems that this is happening to you because it's the SQLite db file which is obviously due to Heroku's
Read more

lex - Building a lexical Analyzer in Java -

-
I am currently learning lexical analysis in compiler design. To know how a lexical analyzer actually works, I am trying to build myself. I am planning to make it in Java The input to the lexical analyzer is a .tex file that is of the following format. \ section {script} {intro} \ section {Scope} arbitrary text \ section {relevance} uncontrolled text \ subdivision (profit) arbitrary text \ subsubsection {in real life} \ subdivision {Ingredient} \ end {document} The output of the lecture may be a table of contents with a page number in another file. 1 Introduction 1 1.1 Scope 1 1.2 Relevance 2 1.2.1 Benefits 2 1.2.1.1 Real life 2 1.2.2 loss 3 I hope that This problem is within the scope of Language Analysis Read the .exe file and check '\' and continue to check whether it is actually on search In the sectioning command is set to indicate whether or not a flag variable is the type of sectioning. I hope the above approach will work for the construction of Lexa
Read more

python - rename keys in a dictionary -

-
I want to change the names of keys in a dictionary which are ints, and I need them so that the inputs with key zero They can sort correctly. For example, my keys are like this: '1', '101', '11' and I may need them: '001', '101', '011' What is doing, but I know that there is a better way tmpDict = {} in the ADC for the old: t MpDict ['% 04d'% int (olden)] = addict [oldkey] New controlled = tmpDict You are going wrong about this if you want to draw entries on a line in a specific way, then you have to sort on the extraction. for sorted (D, key = int): print '% s:% R'% (k, d [k]) < / Div>
Read more