Module 7

Question 1

What is the difference between a list and a tuples in python?

Answer 1

1. Lists can be changed and tuples can’t be changed.
2. List are declared using [] and tuples using ()

Question 2

What the // operator does?

Answer 2

It divides two operands and grounds the result.
Ex: 5 / 3 = 1.666666…
5 // 3 = 1.

Question 3

What is half-splitting?

Answer 3

An approach for troubleshooting. It works by isolating an error to one section.

Question 4

Why to use the “one step at a time” approach?

Answer 4

It helps to remove confusion.

Question 5

What is IaaS?

Answer 5

Cloud services called: Infrastructure as a Service.

Hardware: Storage, computing resourcers.
Software: Server computers (to make the resourcers offered work)

Question 6

What is PaaS?

Answer 6

Cloud services called: Platform as a Service.

OS + Application Stack.
Ex: Linux + apache, mysql and PHP.

Question 7

What is SaaS?

Answer 7

Cloud services called: Software as a Service.

MS Word online.

Question 8

What are the big cloud services providers?

Answer 8

AWS from amazon.
Azure from Microsoft.
Google cloud.

Question 9

What the string function does?

Answer 9

Converts any data type to string.
Ex:
x = 500
listA = []
listA.append(str(listA))
[‘500’]

Question 10

What the float function does?

Answer 10

Return a floating point number from an interger or string.
Ex:
k = float(699)
print(k)
699.0
print(float(‘500’))
500.0

Question 11

What the length function does?

Answer 11

Gets the length (number of characters) of a variable (such as a string or integer).

print(len(‘1234’))
4

Question 12

What the integer function does?

Answer 12

Change a float to a interger.

print(int(291.3))
291

Question 13

What the round function does?

Answer 13

Round a number to the nearest whole number.

print(round(29.76521))
30

Question 14

How can you delete a variable in python?

Answer 14

x = 15
print(x)
15
del x
print(x)
error

Question 15

How do you use if statement in python?

Answer 15

if x <= 15:
do something
elif:
do another thing
else:
do this

Question 16

How do you use for in python?

Answer 16

for counter in range (10, 4, -1):
print(counter)

Question 17

How do you use while in python?

Answer 17

counter = 0
while counter < 22:
do something
counter += 1

Question 18

How do you create a dictionary python?

Answer 18

birthdays = {‘Rodrigo’ : ‘March’, ‘Marcela’ : ‘March’, ‘Adriano’ : ‘May’}

*** del birthday[‘rodrigo’]