Lichen

tests/list.py

307:fc291b59f67b
2016-12-03 Paul Boddie Implemented the inversion operator for integers.
     1 l = [1, 2, 3]     2 l.append("four")     3 print len(l)            # 4     4 print l[0]              # 1     5 print l[1]              # 2     6 print l[2]              # 3     7 print l[3]              # four     8 print l[-1]             # four     9 print l[-2]             # 3    10 print l[-3]             # 2    11 print l[-4]             # 1    12 print l                 # [1, 2, 3, "four"]    13     14 t = (1, 2, 3, "four")    15 l = list(t)    16 print l                 # [1, 2, 3, "four"]    17     18 try:    19     print l[4]          # should raise an exception    20 except IndexError, exc:    21     print "l[4]: failed with argument", exc.index    22     23 try:    24     print l[-5]         # should raise an exception    25 except IndexError, exc:    26     print "l[-5]: failed with argument", exc.index    27     28 print 1 in l            # True    29 print 4 in l            # False    30 print "four" in l       # True    31 print "one" in l        # False    32 print 1 not in l        # False    33 print 4 not in l        # True    34 print "four" not in l   # False    35 print "one" not in l    # True    36     37 print l.index(1)        # 0    38 print l.index("four")   # 3    39     40 try:    41     print l.index(4)    # should raise an exception    42 except ValueError, exc:    43     print "l.index(4): failed to find argument", exc.value