Week 6 - Python

Question 1

How to run a Python program?

Answer 1

python programName.py

Question 2

What are some of biggest differences between Python and C that make Python way cleaner?

Answer 2

• No semicolons at the end of lines
• No curly braces on blocks
• No parenthesis on conditionals
• No type mentioning on vars. declarations/initilializations

Question 3

How to declare a function on Python?

Answer 3

def functionName()

Question 4

What should always be the very last line of code of any Python program?

Answer 4

Main call - main()

Question 5

What’s the downside of Python being so much easier to program than C, i.e.?

Answer 5

Expense of performance, because of so many functions running in the background

Question 6

What’s the comments markup in C?

Answer 6

#

Question 7

What are the loops that can be used in Python?

Answer 7

While loops and for loops

Question 8

What are lists in Python?

Answer 8

Arrays

Question 9

What’s the biggest advantage of Python’s lists?

Answer 9

They’re not size fixed

Question 10

What’s the lists markup on Python?

Answer 10

Square brackets

Question 11

What are tuples?

Answer 11

They’re a data type in Python similar to C’s structs, but they have inmutable values

Question 12

What are objects in Python?

Answer 12

They’re similar to C structs

Question 13

Why styling is even more important in Python?

Answer 13

Because if tabs and indentation are not used things may not work as intended

Question 14

import fileName in Python is the equivalent to what in C?

Answer 14

include <file_name></file_name>

Question 15

What should be used instead of || and && operators in Python?

Answer 15

Or/and

Question 16

What should be used instead of else if in Python?

Answer 16

elif

Question 17

What to use instead of the bang operator (!) in Python?

Answer 17

The keyword not

Question 18

How to write the increment by one operator in Python?

Answer 18

+= 1

Question 19

Write a range function

Answer 19

for x in range(100):
print(x)

Question 20

What does the range function do?

Answer 20

Iterates until the stop condition passed as an argument - 1

Question 21

What are dictionaries?

Answer 21

Dictionaires are like hash tables in C. They have key-value pairs

Question 22

What’s the markup for dictionaires in Python?

Answer 22

Curly braces

Question 23

What are methods?

Answer 23

Functions that can only be called on objects

Question 24

How to add keys and values to dictionaries?

Answer 24

book[“title”] = “Corduroy”

Question 25

How are libraries called in Python?

Answer 25

Modules

Question 26

What’s the advantage of using with open(“fileName.ext”) as file?

Answer 26

Not having to close the file, because Python will do it automatically