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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Then those users have more fundamental problems. There is a minimum level of computer knowledge needed to be successful in programming. Insulating users from the reality of the situation is not preparing them to be successful. Pretending that there is no system command prompt, or shell, or whatever platform specific term applies, only hurts new programmers. Give users an error message they can google, and they will be better off in the long run than they would be if we just ran pip for them.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Stephan Houben [mailto:stephanh42@gmail.com] <br><b>Sent:</b> Sunday, October 29, 2017 3:43 PM<br><b>To:</b> Alex Walters <tritium-list@sdamon.com><br><b>Cc:</b> Python-Ideas <python-ideas@python.org><br><b>Subject:</b> Re: [Python-ideas] install pip packages from Python prompt<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi Alex,<o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2017-10-29 20:26 GMT+01:00 Alex Walters <<a href="mailto:tritium-list@sdamon.com" target="_blank">tritium-list@sdamon.com</a>>:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> return “Please run pip from your system command prompt”<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The target audience for my proposal are people who do not know<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>which part of the sheep the "system command prompt" is.<o:p></o:p></p></div><div><p class=MsoNormal>Stephan<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> Python-ideas [mailto:<a href="mailto:python-ideas-bounces%2Btritium-list" target="_blank">python-ideas-bounces+tritium-list</a>=<a href="mailto:sdamon.com@python.org" target="_blank">sdamon.com@python.org</a>] <b>On Behalf Of </b>Stephan Houben<br><b>Sent:</b> Sunday, October 29, 2017 3:19 PM<br><b>To:</b> Python-Ideas <<a href="mailto:python-ideas@python.org" target="_blank">python-ideas@python.org</a>><br><b>Subject:</b> [Python-ideas] install pip packages from Python prompt<o:p></o:p></p></div></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Hi all,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Here is in somewhat more detail my earlier proposal for<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>having in the interactive Python interpreter a `pip` function to <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>install packages from Pypi.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Motivation: it appears to me that there is a category of newbies<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>for which "open a shell and do `pip whatever`" is a bit too much.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>It would, in my opinion, simplify things a bit if they could just<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>copy-and-paste some text into the Python interpreter and have<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>some packages from pip installed. <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>That would simplify instructions on how to install package xyz,<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>without going into the vagaries of how to open a shell on various <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>platforms, and how to get to the right pip executable.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I think this could be as simple as:<br><br> def pip(args):<br> import sys<br> import subprocess<br> subprocess.check_call([sys.executable, "-m", "pip"] + args.split())<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> print("Please re-start Python now to use installed or upgraded packages.")<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Note that I added the final message about restarting the interpreter<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>as a low-tech solution to the problem of packages being already<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>imported in the current Python session.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I would imagine that the author of package xyz would then put on<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>their webpage something like:<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> To use, enter in your Python interpreter:<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> pip("install xyz --user")<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>As another example, consider prof. Baldwin from Woolamaloo university<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>who teaches a course "Introductory Python programming for Sheep Shavers".<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>In his course material, he instructs his students to execute the<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>following line in their Python interpreter.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> pip("install woolamaloo-sheepshavers-goodies --user")<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>which will install a package which will in turn, as dependencies,<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>pull in a number of packages which are relevant for sheep shaving but<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>which have nevertheless irresponsibly been left outside the stdlib.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Stephan<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> <o:p></o:p></p></div></div></div></div></div></div></div></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></body></html>