Python

Question 1

What is a string?

Answer 1

1 or more characters enclosed in speech marks

Question 2

How do u write a print statement?

Answer 2

print(“…”)

Question 3

What does concatenate mean?

Answer 3

Combining multiple strings into a single string

Question 4

How to concatenate?

Answer 4

Using +
Eg. print(“…”+”…”)
U can also put variables in there, not just strings
Eg. print(“….”+ … + “…”)

Question 5

What is an integer?

Answer 5

A whole number, called int

Question 6

What is a floating point/real?

Answer 6

A number with a decimal, called float

Question 7

What is mod?

Answer 7

Returns the remainder using the % symbol
Eg. 17%6=5

Question 8

What is div?

Answer 8

Gives the integer number without rounding
does not show the remainders or decimals
Uses the symbol //
Eg.17//6=2

Question 9

How to round numbers?
Eg. Round 17/6 to 3 decimal places

Answer 9

Use round(… , the amount of decimal places)
Eg.result = 17/6
round(result, 3)

Question 10

How to say less than or equal to?

Answer 10

<=

Question 11

How to say greater than or equal to?

Answer 11

> =

Question 12

How to say not equal?

Answer 12

!=

Question 13

How to say equal to?

Answer 13

==

Question 14

What’s the difference between = and ==

Answer 14

= is for assigning a value
== is for comparing the 2 values either side

Question 15

What is a variable?

Answer 15

A memory location that stored values which can change during execution
Eg. name=“Diya”

It can not start with a number, nor can it have a space

Question 16

How to use , ?

Answer 16

It is used to separate separate strings, integers, real numbers and variables

Just remember to only add “ “ when u are talking about strings and not for variables or numbers
Eg. cost = 15
print (“The cost is £”, cost)

Question 17

Can u use both + and , to concatenate?

Answer 17

Yes
But remember + can not be used as a separator and join a string and number so u have to turn numbers into strings

Eg.cost =15
price(“The cost is £ +str(cost))

Question 18

How to make a string appear in a new line in just 1 print statement?

Answer 18

Use \n
Eg. print(“hello \nhow are you?”)

Question 19

What does tab do?

Answer 19

Leaves a lot more space between the strings
Use \t
Eg. print(“hi \t how are you?)

Question 20

How to make 2 strings that are not on the same line appear in 1 line?

Answer 20

By using end = “ “
Eg. print(“this should all print”, end = “ “)
print(“on the same line”)

Question 21

How to make multiple strings that are not on the same line appear in 1 line?

Answer 21

U can either close all the separate strings and add a ,
Eg. print(“how will this”,
“statement”,
be printed?”)

Or u can add \ without closing the quotes
Eg. print(“This is a long line of text \
split in the middle of the quote”)

Question 22

What does triple quotes do?

Answer 22

Retains the formatting of the string
Eg.print(‘’’
John Smith
23 Elm Street
Andover
‘’’)
This makes sure it is printed out exactly like it looks in the top (in between the quote marks obviously)

Question 23

How do u write an input statement?

Answer 23

By using input(“ if there’s something u wanna say to the person typing in the input:”)
Eg. name= input(“Please enter your name:”)
print(“My name is”, name)

Or u can print the thing u wanna say first and then say variable=input()
Eg. print(“Please enter your name:”)
name = input()

Question 24

Can u use + to separate variables or numbers to strings when writing an input statement?

Answer 24

Yes (remember to turn numbers into strings tho)
Eg.name= input(“Please enter your name:”)
print(“My name is”, name)
number= input (name, + “,” + “please enter your phone number:”)

Question 25

How to turn numbers into strings?

Answer 25

Use str(…) Eg. a=5 a= str(5) Or u can just put it in “ “

Question 26

How to turn something into an integer? (Number)

Answer 26

Either …(int) Or in an input statement it’s int(input=…

Question 27

How to add comments (write things to help understand what is going on in the code without it running)

Answer 27

Add a # Anything after this will be ignored Eg. # Chapter 2 question 1

Question 28

How to make a string all uppercase?

Answer 28

variable.upper() Eg. Name = diya Print (Name.upper()) It would come out as DIYA

Question 29

How to make a string all lowercase?

Answer 29

variable.lower() Eg. Name = DIYA Print (Name.lower()) It would come out as diya

Question 30

How to replace a string with a different string?

Answer 30

variable.replace(old string, new string) Eg. favourite_food = Chapathi Print (Name.replace (Chapathi, Poori)) It would come out as Poori

Question 31

What is the index?

Answer 31

The position of a character in a string It starts in 0 instead of 1

Question 32

When changing a string to be uppercase,lowercase, replaced, found, indexed How do u change the original variable to be the new string instead of the old one?

Answer 32

At the end say Variable = variable. …(whatever you’re trying to do with it)

Question 33

How to turn a number into a float? (With decimals)

Answer 33

Float (…)

Question 34

What are the 2 ways to find the index of a character in a string? (So basically the first occurrence of a character)

Answer 34

variable.index(…) Finds the first time a character appears in a string Starts in 0 not 1! Variable.find(…) This gives a -1 if not found instead of error like the .index method

Question 35

How to slice strings? (Make only part of the string appear) Eg: make it just say Pyt and not Python

Answer 35

Assign the string to something Then do (variable[first index:last index]) Basically but the index of the first character u want to appear and the last character u want to appear Eg. Name=Python Print(Name[0:2])

Question 36

How to make an if statement (selection) ?

Answer 36

If … : elif… : else:

Question 37

What are the 3 Boolean operators?

Answer 37

and or not

Question 38

What’s the difference between Boolean operator and Boolean expression

Answer 38

Expression is true or false Operator is and,or,not

Question 39

How to write a count controlled loop?

Answer 39

use for an in for the starting point of the iteration range to say how many times it needs to be repeated Eg. total= 0 for i in range (1,8): dailyTemp= float(input(“ what is the temperature today?”) total= float(total+ dailyTemp) print (total/7)

Question 40

How to write a condition controlled loop?

Answer 40

Using while Eg. Password= input(“Please enter your password: “) while password != “DiyaDeepak123”: password= input(“Invalid password, please try again: “) print (“correct password”)

Question 41

What is an iteration?

Answer 41

Repeated execution of a set of instructions

Question 42

What is a count controlled loop?

Answer 42

For loop When u execute the loop a specific number of times

Question 43

What is a condition controlled loop?

Answer 43

While loop When u execute the loop while a certain condition remains true

Question 44

How to generate a random number?

Answer 44

Firstly type, import random, at the start of the program (don’t need to later) Then it’s Variable_name= random.randint(number u wanna start at, number you wanna end at) Eg. dice = random.randint(1,6) Any number between 1 to 6 including

Question 45

How to write a for loop?

Answer 45

for … in range (starting number, ending number): The … means u can put anything u like so usually i or something Numbers are up to but not including the last number so 1,6 would be 1,2,3,4,5

Question 46

What does while do?

Answer 46

True or false Usually used alongside comparison operators

Question 47

Whats the difference between input and output?

Answer 47

Input is an input statement thats for the programmer by the user (receiving data) Output is the print statement thats for the user from the programmer (display the data)

Question 48

How to write an array?

Answer 48

name_of_array = [None] * number of slots in memory name_of_array[0] = “whatever u wanna store there” Ps. Continue doing this until u do all the things u wanna store To find something do… name_of_array [y coordinate][x coordinate] Remember that arrays start at 0!

Question 49

How to open an external file to read data from it and close it after?

Answer 49

f = open(“file name”) data = f.read() f.close()

Question 50

What are all the stuff to search in à database and what do they do?

Answer 50

Variable = “SELECT name_of_column (technically called fields), FROM table_name, WHERE field > (the comparison operator) specifics

Question 51

Whats a procedure?

Answer 51

When u perform a task in the background eg. Adding 1 to day or something

Question 52

Whats a function?

Answer 52

When u perform a task that returns à result Eg. Print(variable)