📃 Solution for Exercise 01

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Solutions

1.

What is 5 to the power of 5?

5 ** 5

3125

2.

What is the remainder from dividing 73 by 6?

73 % 6

1

3.

How many times does the whole number 3 go into 123? What is the remainder of dividing 123 by 3?

print(1234 // 3)
print(1234 % 3)

411
1

4.

Split this string on the space character into a list:

s = "MDS is going virtual!"

s = "MDS is going virtual!"
s.split()

['MDS', 'is', 'going', 'virtual!']

5.

Given the following variables:

thing = "light"
speed = 299792458  # m/s

Use f-strings to print:

The speed of light is 2.997925e+08 m/s.

thing = "light"
speed = 299792458  # m/s
print(f"The speed of {thing} is {speed:2e} m/s.")

The speed of light is 2.997925e+08 m/s.

6.

Given this nested list, use indexing to grab the word “MDS”:

l = [10,[3,4],[5,[100,200,['MDS']],23,11],1,7]

l[2][1][2]

['MDS']

7.

Given this nest dictionary grab the word “MDS”:

d = {
    "outer": [
        1,
        2,
        3,
        {"inner": ["this", "is", "inception", {"inner_inner": [1, 2, 3, "MDS"]}]},
    ]
}

d['outer'][3]['inner'][3]['inner_inner'][3]

'MDS'

8.

Why does the following cell return an error?

t = (1, 2, 3, 4, 5)
t[-1] = 6

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-20-d668dd5b8bda> in <module>
      1 t = (1, 2, 3, 4, 5)
----> 2 t[-1] = 6

TypeError: 'tuple' object does not support item assignment

Because tuples are immutable!

9.

Use string methods to extract the website domain from an email, e.g., from the string "bruce.wayne@fakemail.com", you should extract "fakemail".

email = "bruce.wayne@fakemail.com"
email.split("@")[-1].split(".com")[0]

'fakemail'

10.

Given the variable language which contains a string, use if/elif/else to write a program that:

• return “I love snakes!” if language is "python" (any kind of capitalization)

• return “Are you a pirate?” if language is "R" (any kind of capitalization)

• else return “What is language?” if language is anything else.

language = "python"
if language.lower() == "python":
    print("I love snakes!")
elif language.lower() == "r":
    print("Are you a pirate?")
else:
    print(f"What is {language}?")

I love snakes!