I also use a batch file to launch Python 3.8. In my case, I also have Python 2.7 on the machine, and paths for 2.7 are in the path. So my batch file also mangles those 2.7 paths so they don't interfere with the 3.8 ones. (I still need 2.7 for work on one particular project).
I'm considering creating a batch file to set the PYTHONPATH to use my git clone for development, and another to set up for pyqt6. But I'm not convinced that these things are worth the trouble to keep the extra batch files straight in my memory. Like you, I always make sure I'm using the right version of pip. But I don't do it by specifying the version (e.g., pip3). Instead, I launch it using pyxx -m pip This automatically makes sure that the correct version of pip gets used, whichever version of Python I'm using. On Tuesday, April 13, 2021 at 10:57:59 AM UTC-4 Edward K. Ream wrote: > Here is how I switch between different versions of python. It could be > extended to handle different versions of qt, but I haven't done that. > > The advantages of my scheme are: > > - It uses no extra software, just python and pip. > - It does not change the state of the system in any way. > - It makes no changes to system settings. > - It does not use sitecustomize.py. > - It allows me to install all my Leo-related software in my home directory. > > For each version V (say 3.9), of python, I do the following: > > - Install python 3.9 in my home directory, choosing "no" when asked if I > want to change the system's path var. > - Create aliases (.bat files) for leo39 and pip39. > - Create aliases (.bat files) that open various .leo files using python > 3.9. These aliases all call leo39. > > Python 3.9 is the default, I also create aliases that don't have a version > number. But not plain "pip": I want to have to specify the version number > explicitly when I install packages. > > That's *all.* > > *Summary* > > I use aliases (.bat files) to specify the desired environment. aliases > without a version suffix denote the default environment. > > This scheme works well for me. You might like it as well. > > Edward > -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/0103cdcf-9011-4553-aabd-2796eca952f3n%40googlegroups.com.
