On Jan 6, 2011, at 3:46 PM, Ned Deily wrote: > In article <775a9d45-25b5-4a16-9fe5-6217fd67f...@cagttraining.com>, > Bill Felton <subscripti...@cagttraining.com> wrote: >> I'm new to python, trying to learn it from a variety of resources, including >> references posted recently to this list. >> I'm going through /www.openbookproject.net/thinkCSpy/ and find it makes use >> of gasp, which apparently is not compatible with 3.1. >> I've also seen various resources indicate that one can install both Python >> 2.7 and Python 3.1 -- but when I did this, I get no end of problems in the >> 2.7 install. IDLE, in particular, fails rather spectacularly, even if I >> launch it directly from the Python 2.7 directory in which it resides. >> So, either I've been misled and should only try to have one or the other. >> OR >> I'm missing some (probably simple) step that's mucking me up. >> Help? > > Yes, you can have multiple versions of Python installed on Mac OS X. In > fact, Apple ships multiple versions of Python with OS X (2.6 and 2.6 > with OS X 10.6, for example). Starting with Python 2.7, python.org > offers two variants of OS X installers, one is 32-bit-only and works on > all versions of OS X 10.3.9 through OS X 10.6, the other supports 64-bit > execution and only works on 10.6 (as of 2.7.1). Unfortunately, there > are some major interaction problems between Tkinter, Python's GUI > toolkit which is used by IDLE, and the Tcl/Tk 8.5 supplied by Apple in > OS X 10.6. I'm assuming you installed the 64-bit version. If so, until > the problem is resolved in the next maintenance release of Python 2.7, I > suggest you download and install the 32-bit-only version of Python 2.7.1 > which does not have those problems. >
Thank you, Ned! Installing what appeared to be the 'old OS' version seems to fix my difficulty. IDLE now works fine without hanging, I can enter code, save, check syntax, and run from the 'new window'. And 3.1 still works as before. regards, Bill
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