[Level 2] enumrate() in Python. 

#!/bin/env python
aWeek = ['Sun', 'Mon','Tue','Wed', 'Thu', 'Fri', 'Sat']

## without enumerate()
print 'without enumerate()...'
index = 0
for day in aWeek:
    print index, day
    index += 1

## without enumerate()
print 'without enumerate()...'
for index in range(len(aWeek)):
    print index, aWeek[index]

## with enumerate()
print 'with enumerate()...'
for (index, day) in enumerate(aWeek):
    print index, day

without enumerate()...
0 Sun
1 Mon
2 Tue
3 Wed
4 Thu
5 Fri
6 Sat
without enumerate()...
0 Sun
1 Mon
2 Tue
3 Wed
4 Thu
5 Fri
6 Sat
with enumerate()...
0 Sun
1 Mon
2 Tue
3 Wed
4 Thu
5 Fri
6 Sat
Use enumerate() would make code easier to read.

Wish this helps.
regards,
Stanley Huang

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