On Thu, Oct 24, 2013 at 05:21:56PM +0000, Dave Angel wrote: > If you > want a surprise, try the following simple program some time. > > import sys > print(sys.modules) > > when I tried that interactively on 2.7, it printed some 240+ names.
Wow. What were you doing? Ah, I bet you had imported numpy or similar! numpy brings in a lot. [steve@ando ~]$ python2.7 -c "import sys, numpy; print len(sys.modules)" 233 Here are the results you get with a freshly-started Python interpreter on Linux, for various versions of Python, excluding numpy. Starting with ancient Python 1.5, and going right up the most recent 3.4 alpha version. [steve@ando ~]$ python1.5 -c "import sys; print len(sys.modules)" 12 [steve@ando ~]$ python2.4 -c "import sys; print len(sys.modules)" 29 [steve@ando ~]$ python2.5 -c "import sys; print len(sys.modules)" 27 [steve@ando ~]$ python2.6 -c "import sys; print len(sys.modules)" 30 [steve@ando ~]$ python2.7 -c "import sys; print len(sys.modules)" 39 [steve@ando ~]$ python3.2 -c "import sys; print(len(sys.modules))" 52 [steve@ando ~]$ python3.3 -c "import sys; print(len(sys.modules))" 54 [steve@ando ~]$ python3.4 -c "import sys; print(len(sys.modules))" 34 And a few others: steve@orac:~$ jython -c "import sys; print len(sys.modules)" 31 steve@orac:~$ ipy -c "import sys; print len(sys.modules)" 21 steve@orac:~$ ipython -c "import sys; print len(sys.modules)" 269 ipython also brings in a lot of modules, even more than numpy. Oooh, now there's a thought! steve@orac:~$ ipython -c "import sys, numpy; print len(sys.modules)" 397 -- Steven _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
