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4 different ways of parsing a list
Lists and Tuples example from a Well House Consultants training course
More on Lists and Tuples [link]
Source code: lister Module: Y104
#!/usr/bin/env python3

# Set up a list to parse through

lunch = ["crisps","sarnies","orange juice","wraps",["grape","apple","pear"]]

# A while loop is longwinded but will always work

current = 0
while current < len(lunch):
     print("Graham ate all the",lunch[current])
     current += 1

lunch[1] = "crumbs"

# Using for to step through the indexes ...

for current in range(len(lunch)):
     print("Vanessa missed out on the",lunch[current])

for current in (0,2,3,1):
     print("Malcolm also missed out on the",lunch[current])

# Using for to step through the contents ...

for current in lunch:
     print("Dave was hankering after the",current)

""" Here's the output when you run that:

WomanWithCat:y104 grahamellis$ chmod +x lister
WomanWithCat:y104 grahamellis$ ./lister
Graham ate all the crisps
Graham ate all the sarnies
Graham ate all the orange juice
Graham ate all the wraps
Graham ate all the ['grape', 'apple', 'pear']
Vanessa missed out on the crisps
Vanessa missed out on the crumbs
Vanessa missed out on the orange juice
Vanessa missed out on the wraps
Vanessa missed out on the ['grape', 'apple', 'pear']
Vanessa missed out on the Whiskey
Malcolm also missed out on the crisps
Malcolm also missed out on the orange juice
Malcolm also missed out on the wraps
Malcolm also missed out on the crumbs
Dave was hankering after the crisps
Dave was hankering after the crumbs
Dave was hankering after the orange juice
Dave was hankering after the wraps
Dave was hankering after the ['grape', 'apple', 'pear']
Dave was hankering after the Whiskey
WomanWithCat:y104 grahamellis$


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This module and example are covered on the following public courses:
 * Learning to program in Python
 * Python Programming
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