#!/usr/bin/python

"""
    lists.py -- simple samples of a few list and tuple-related operations

    Jeff Ondich, 24 October 2006

    Read, predict the output, experiment.  Note that there's a crash in
    the code as it stands.  Why does it crash?  Comment out the offending
    line once you understand why it's offensive.
"""

print '=============== initializing and iterating through a simple list =============='
someList = ['moose', 'emu', 'goat', 'squid']

for item in someList:
    print item
print


print '=============== "slicing" a list =============='
someList = ['moose', 17, 'emu', 'goat', 'squid']

print 'someList --', someList
print 'someList[2:3] --', someList[2:3]
print 'someList[2:] --', someList[2:]
print

# Note the difference between ['ant'] and 'ant' in this context
someList[2:4] = ['ant']
print 'someList --', someList
someList[2:4] = 'ant'
print 'someList --', someList
print

someList.append('cow')
someList.extend(['kiwi'])
print 'someList --', someList
print

print '=============== tuples: read-only lists =============='
someTuple = ('dog', 23, 'cat')
for thing in someTuple:
    print thing

# This will crash.
print 'Try to add to a tuple...'
someTuple.append('gerbil')
print


print '=============== more list operations =============='
# Go to http://docs.python.org/lib/typesseq.html
# and play around with the various list operations.