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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 Predict the output of cells 4, 8, and 12.
Watch Brandon Rhodes' presentation
Names, Objects, and Plummeting From The Cliff.
Step1:  Show what map() does.
Step2:  fstrings can handle expressions, not just variable names.
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Python Code:
a = [i*i for i in range(3)]
a
b = a
b[1] = 'hello'
b
a
a = [i*i for i in range(3)]
a
b = a[:]
b[1] = 'hello'
b
a
a = [i*i for i in range(3)]
a
b = a.copy()
b[1] = 'hello'
b
a
Explanation: Predict the output of cells 4, 8, and 12.
Watch Brandon Rhodes' presentation
Names, Objects, and Plummeting From The Cliff.
End of explanation
def foo(s):
    return s + ' on the Beach.'
list(map(foo, ('sand', 'clams', 'dunes')))
a = (1, 2, 3)
b = (2, 3, 4, 5)
from itertools import zip_longest
sum(map(sum, zip_longest(a, b, fillvalue=0)))
sum((sum(a), sum(b)))
sum(a + b)
Explanation: Show what map() does.
End of explanation
f'hello {sum(map(sum, zip_longest(a, b, fillvalue=0)))} world'
Explanation: fstrings can handle expressions, not just variable names.
End of explanation
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