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ex32.py
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ex32.py
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"""
EC 1
range([start,] stop[, step]) -> list of integers
So range(4) returns the list [0, 1, 2, 3]
EC 2
Yes, let's try that.
EC 3
Gold mine of information about lists at
http://docs.python.org/tutorial/datastructures.html
I read about the various methods lists have,
how to use lists as stacks (pop() and append())
and what filter, map and reduce are.
I should read more about comprehensions, etc...
later.
"""
the_count = [1, 2, 3, 4, 5]
fruits = ['apples', 'oranges', 'pears', 'apricots']
change = [1, 'pennies', 2, 'dimes', 3, 'quarters']
# this first kind of for-loop goes through a list
for number in the_count:
print "This is count %d" % number
# same as above
for fruit in fruits:
print "A fruit of type: %s" % fruit
# also we can go through mixed lists too
# notice we have to use %r since we don't know what's in it
for i in change:
print "I got %r" % i
# we can also build lists, first start with an empty one
elements = []
# then use the range function to do 0 to 5 counts
for i in range(0, 6):
print "Adding %d to the list." % i
# append is a function that lists understand
elements.append(i)
# EC2 alternate way to create a 6 element list
alt_elements = range(6)
if elements == alt_elements:
print "Yup, the same."
# now we can print them out too
for i in elements:
print "Element was: %d" % i