CNM - C3

my_list = [1, 7, “hi”, 3, 5]

write a for loop to list this list

remember colon and 4 spaces to be included in loop

write a while loop to produce 0,1,2,3,4,5

symbols for

whats will be printed if at the beginning

• x=1

• x=2

• x=3

if x=1 printed: 1

if x=2 printed: -8888

if x=3 printed: -9999

what code can you use to avoid error and move forward with code

try and except

it will try the try code and if this won’t work it will run the except code

what can you use to test for potential issues and stop the code

if —→ raise Exception()

words used to halt or proceed with a loop

break - terminates the nearest loop it is in

continue - continues to the next iteration of the loop

what does this code do and what should the spacing be

figure out the code

text = input("enter a string:")

if ___________

print("even")

else:

print("odd")

• fill the gap after even to create a programme which prints even if the number of letters in the string is even and odd if it isn’t

text = input("enter a string:")

if len(text) %2 == 0:

print("even")

else:

print("odd")

this divides by 2 and gives the remainder - if the remainder is 0 it is even

how do you denote a dictionary in python and give an example dictionary with some personal info

it should have curly brackets, “speech marks” colons in between key and variables and commas in between information:

information = {"Name" : "Daisy", "Location": "Sheffield"}

print(information[“Name”]) gives Daisy

you can change and add info

What is the output from the following section of code?

try:

x = int("100")

print(x)

except:

print("Error")

is it '“100”, 100, or Error

100

what will this code return

d = {"a": 1, "b": 2}

for key in d:

print(d[key])

1

2

Which Python feature can combine two lists into a dictionary without using a manual loop?

zip() is used followed by dict()

eg:

keys = ['a', 'b', 'c']

values = [1, 2, 3]

d = dict(zip(keys, values))

what does this code print

my_dict = {"a": 1, "b": 2}

for key in my_dict:

print(key)

a

b

What is the output of this code?

for i in range(2):

for j in range(2):

print(i, j)

(0,0) (0,1) (1,0) (1,1)

What is the output for the following section of code?

keys = ["a", "b", "c"]

values = [1, 2, 3]

result = {}

for i in range(len(keys)):

result[keys[i]] = values[i]

{"a": 1, "b": 2, "c": 3}

What is the output of this code?

varA = True

varB = False

if varA:

print("TRUE")

if not varB:

print("TRUE")

TRUE

TRUE

What will happen?

if 0:

print("Hello")

else:

print("Goodbye")

prints goodbye

What's the output for the following section of code?

nums = {"x": 10, "y": 20}

nums["x"] += 5

print(nums["x"])

15

What's the output for the following section of code?

d = {"x": 1, "y": 2, "z": 3}

print("y" in d)

True

change this so it prints 2

d = {"x": 1, "y": 2, "z": 3}

print("y" in d)

d = {"x": 1, "y": 2, "z": 3}

print(d[“y”])

What type of data is always returned by input()?

String - always.

What is an exception in Python?

An error detected during program execution