Types Of Functions

Question 1

How to use range() function

Answer 1

for I in range(0,20,2)
Print(i)
Output= 2 4 6 8 10 12 14 16 18

Question 2

Python range(start, stop, step)

Answer 2

Start Stop
0 ,1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 , 9, 10
Step (2)
Output 0 2 4 6 8

Question 3

What are tuples?

Answer 3

Tuples are an ordered sequences of items, just like lists. The main difference between tuples and lists is that tuples cannot be changed.

Question 4

What are dictionaries?

Answer 4

Dictionaries are data structures that map unique keys to value, but dictionary keys can be any immutable data type

Question 5

How to use dictionary values as a function

Answer 5

webstersDict[‘marathon’]

Output- a running race that is about 26 miles

Question 6

How to add new key-value pair to an existing dictionary

Answer 6

webstersDict[‘shoe’] = ‘an external covering for the human foot’

Question 7

How to update dictionary keys

Answer 7

webstersDict update({‘ran’ : ‘past tense of run’, ‘shoes’ : ‘plural of shoe’})

Question 8

How to use get() method

Answer 8

Story count = {‘is’ : 100,’the’ : 90, ‘michael’ : 12, ‘runs’ : 5}
storycount.get(‘Michael’)
Output- 12

Question 9

pop(method)

Answer 9

The pop method removes a key and returns the value

Question 10

How to use pop() method

Answer 10

storyCount.pop(‘the’)

Output- 90

Question 11

What is keys() method

And how is it used?

Answer 11

The keys method returns the keys of the dictionary as a dictionary view object.
keys() type(storyCount.keys())
Output- dict_keys

Question 12

What is values() method?

Answer 12

The values method returns the values in the dictionary

Question 13

How to use values() method?

Answer 13

storyCount.values()

Output- dict_values([100, 12, 5])

Question 14

What is items() method?

Answer 14

The items method returns a dictionary view object

Question 15

How to use items() method

Answer 15

list(webstersDict.items())
Output-[(‘person’,, ‘a human being’)]
Etc.

Question 16

What are loops?

Answer 16

A for loop is used for iterating over a sequence (list, tuple, dictionary, string, etc).

Question 17

How to use loops?

Answer 17

myName = “Michael”
for x in myName:
print(x)
Output- M i c h a e l

Question 18

How to use loops for index?

Answer 18

list(range(0,10))

Output- [0,1,2,3,4,5,6,7,8,9]

Question 19

What is enumerate function?

Answer 19

The enumerate function returns a tuple containing a count for every iteration (from start which defaults to 0)

Question 20

How to use enumerate?

Answer 20

DataScienceTools = [‘Python’, ‘R’, ‘SQL’, ‘Git’ ]
for index, tool in enumerate(dataScienceTools):
print(index,tool)
Output- 0 Python 1 R 2 SQL 3 Git

Question 21

How to convert strings to upper or lower case?

Answer 21

upper() method

lower() method

Question 22

What is a comment in python and how is it used?

Answer 22

#This is a comment
print("Hello, World!")