Test your knowledge.
Answer the following questions
Write a brief description of all the following Object Types and Data Structures we’ve learned about:
Numbers:
Strings:
Lists:
Tuples:
Dictionaries:
Numbers
Write an equation that uses multiplication, division, an exponent, addition, and subtraction that is equal to 100.25.
Hint: This is just to test your memory of the basic arithmetic commands, work backwards from 100.25
Answer these 3 questions without typing code. Then type code to check your answer.
What is the value of the expression 4 * (6 + 5)
What is the value of the expression 4 * 6 + 5
What is the value of the expression 4 + 6 * 5 4 * 6 + 5
What is the type of the result of the expression 3 + 1.5 + 4?
What would you use to find a number’s square root, as well as its square?
# Square root:
# Square:
Strings
Given the string ‘hello’ give an index command that returns ‘e’. Enter your code in the cell below:
s = 'hello'
# Print out 'e' using indexing
Reverse the string ‘hello’ using slicing:
s ='hello'
# Reverse the string using slicing
Given the string hello, give two methods of producing the letter ‘o’ using indexing.
s ='hello'
# Print out the 'o'
# Method 1:
# Method 2:
Lists
Build this list [0,0,0] two separate ways.
# Method 1:
# Method 2:
Reassign ‘hello’ in this nested list to say ‘goodbye’ instead:
list3 = [1,2,[3,4,'hello']]
Sort the list below:
list4 = [5,3,4,6,1]
Dictionaries
Using keys and indexing, grab the ‘hello’ from the following dictionaries:
d = {'simple_key':'hello'}
# Grab 'hello'
d = {'k1':{'k2':'hello'}}
# Grab 'hello'
# Getting a little tricker
d = {'k1':[{'nest_key':['this is deep',['hello']]}]}
#Grab hello
# This will be hard and annoying!
d = {'k1':[1,2,{'k2':['this is tricky',{'tough':[1,2,['hello']]}]}]}
Can you sort a dictionary? Why or why not?
Tuples
What is the major difference between tuples and lists?
How do you create a tuple?
Sets
What is unique about a set?
Use a set to find the unique values of the list below:
list5 = [1,2,2,33,4,4,11,22,3,3,2]
Booleans
For the following quiz questions, we will get a preview of comparison operators. In the table below, a=3 and b=4.
| Operator | Description | Example |
|---|---|---|
| == | If the values of two operands are equal, then the condition becomes true. | (a == b) is not true. |
| != | If values of two operands are not equal, then condition becomes true. | (a != b) is true. |
| > | If the value of left operand is greater than the value of right operand, then condition becomes true. | (a > b) is not true. |
| < | If the value of left operand is less than the value of right operand, then condition becomes true. | (a < b) is true. |
| >= | If the value of left operand is greater than or equal to the value of right operand, then condition becomes true. | (a >= b) is not true. |
| <= | If the value of left operand is less than or equal to the value of right operand, then condition becomes true. | (a <= b) is true. |
What will be the resulting Boolean of the following pieces of code (answer fist then check by typing it in!)
# Answer before running cell
2 > 3
# Answer before running cell
3 <= 2
# Answer before running cell
3 == 2.0
# Answer before running cell
3.0 == 3
# Answer before running cell
4**0.5 != 2
Final Question: What is the boolean output of the cell block below?
# two nested lists
l_one = [1,2,[3,4]]
l_two = [1,2,{'k1':4}]
# True or False?
l_one[2][0] >= l_two[2]['k1']
Great Job on your first assessment!
thefuture 