# This is a list
# A list can contain elements of different types.
a = [1, 'eplekake', [7, 6, 5] ]
b = ['fossefall', 3.1415]
    
print "A list of things:"
print a
print b

# Adding lists:
ab = a + b
print "Adding lists:"
print ab

# Multiplying lists
print "Mutiplying lists:"
c = 3 * a
print c

# Here is a list of floats
x = [0.0, 1.0, 2.0, -1.0]
print x
print 2*x


import numpy as np

# we can convert a list of floats to
# a numpy array
print "Array from list:"
y = np.array(x)
print x
print y


# Indexing works the same for lists and arrays:
print x[0]
print y[0]


# Arrays can have more dimensions
m = np.zeros( (3, 4) )
print m