2016-11-28 | Paul Boddie | file changeset files shortlog | Allow null contexts in retrieved attributes to override accessor contexts. This allows the use of functions as methods by instances. Make sure that methods which cannot be initialised in class structures are assigned with their context intact. |
paul@227 | 1 | l = (1, 2, 3, "four") |
paul@266 | 2 | print len(l) # 4 |
paul@266 | 3 | print l[0] # 1 |
paul@266 | 4 | print l[1] # 2 |
paul@266 | 5 | print l[2] # 3 |
paul@266 | 6 | print l[3] # four |
paul@266 | 7 | print l[-1] # four |
paul@266 | 8 | print l[-2] # 3 |
paul@266 | 9 | print l[-3] # 2 |
paul@266 | 10 | print l[-4] # 1 |
paul@266 | 11 | print l # (1, 2, 3, "four") |
paul@227 | 12 | |
paul@227 | 13 | l = [1, 2, 3, "four"] |
paul@227 | 14 | t = tuple(l) |
paul@266 | 15 | print t # (1, 2, 3, "four") |
paul@266 | 16 | |
paul@266 | 17 | try: |
paul@266 | 18 | print t[4] # should raise an exception |
paul@266 | 19 | except IndexError, exc: |
paul@266 | 20 | print "t[4]: failed with argument", exc.index |
paul@266 | 21 | |
paul@266 | 22 | try: |
paul@266 | 23 | print t[-5] # should raise an exception |
paul@266 | 24 | except IndexError, exc: |
paul@266 | 25 | print "t[-5]: failed with argument", exc.index |