# sort_by_many_attributes_via_lambda_demo.py

# sort_by_many_attributes_via_lambda_demo.py

sss = [
    ('tmp', 'bmp', 1000, 1200, 1200),
    ('xyz', 'jpg', 600, 1200, 720),
    ('123', 'jpg', 600, 1000, 600),
    ('foo', 'jpg', 800, 1000, 800),
    ('25', 'jpg', 800, 800, 640),
    ('bar', 'gif', 1000, 800, 800),
    ('abc', 'jpg', 600, 800, 480),
    ('456', 'gif', 800, 1200, 960),
    ('s25', 'gif', 1000, 1000, 1000)]

options = '1:Filename 2:Type 3:Width 4:Height 5:Size'.split()

def keyattr():
    for s in sss: print '\t\t\t%s\t%s\t%s\t%s\t%s'%(s)
    return raw_input("\nSort List By... \
    \n"+' '.join(options)+" (Q:To Exit) \
    \nAnd Re-Enter Attribute # To Reverse The Order. \
    \nKey Selection ::: ")

choice = keyattr()
while choice.lower() != 'q':
    if choice in '12345':
        i = int(choice)-1
        tmp=sss
        sss=sorted(sss,key=lambda x: x[i]) # <<<<<
        for s in range(len(sss)):
            if sss[s][i] != tmp[s][i]: tmp=1; break
        if tmp != 1: sss=sss[::-1] # sss=reversed(sss, reverse=True) as also sss=reversed(sss) does not work properly
        print;print
        print 'Option -- '+options[i]+'\n'
    choice = keyattr()