#!/usr/bin/env python
# coding: utf-8

# # Objects and Data Structures Assessment Test

# ## 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

# In[ ]:





# Explain what the cell below will produce and why. Can you change it so the answer is correct?

# In[ ]:


2/3


# 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 

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# 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? 

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# ## Strings

# Given the string 'hello' give an index command that returns 'e'. Use the code below:

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s = 'hello'
# Print out 'e' using indexing

# Code here


# Reverse the string 'hello' using indexing:

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s ='hello'

# Reverse the string using indexing

# Code here


# Given the string hello, give two methods of producing the letter 'o' using indexing.

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s ='hello'

# Print out the

# Code here


# ## Lists

# Build this list [0,0,0] two separate ways.

# In[ ]:





# Reassign 'hello' in this nested list to say 'goodbye' item in this list:

# In[14]:


l = [1,2,[3,4,'hello']]


# Sort the list below:

# In[15]:


l = [5,3,4,6,1]


# ## Dictionaries

# Using keys and indexing, grab the 'hello' from the following dictionaries:

# In[10]:


d = {'simple_key':'hello'}
# Grab 'hello'


# In[12]:


d = {'k1':{'k2':'hello'}}
# Grab 'hello'


# In[13]:


# Getting a little tricker
d = {'k1':[{'nest_key':['this is deep',['hello']]}]}

#Grab hello


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# 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:

# In[ ]:


l = [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:
# 
# <table class="table table-bordered">
# <tr>
# <th style="width:10%">Operator</th><th style="width:45%">Description</th><th>Example</th>
# </tr>
# <tr>
# <td>==</td>
# <td>If the values of two operands are equal, then the condition becomes true.</td>
# <td> (a == b) is not true.</td>
# </tr>
# <tr>
# <td>!=</td>
# <td>If values of two operands are not equal, then condition becomes true.</td>
# </tr>
# <tr>
# <td>&lt;&gt;</td>
# <td>If values of two operands are not equal, then condition becomes true.</td>
# <td> (a &lt;&gt; b) is true. This is similar to != operator.</td>
# </tr>
# <tr>
# <td>&gt;</td>
# <td>If the value of left operand is greater than the value of right operand, then condition becomes true.</td>
# <td> (a &gt; b) is not true.</td>
# </tr>
# <tr>
# <td>&lt;</td>
# <td>If the value of left operand is less than the value of right operand, then condition becomes true.</td>
# <td> (a &lt; b) is true.</td>
# </tr>
# <tr>
# <td>&gt;=</td>
# <td>If the value of left operand is greater than or equal to the value of right operand, then condition becomes true.</td>
# <td> (a &gt;= b) is not true. </td>
# </tr>
# <tr>
# <td>&lt;=</td>
# <td>If the value of left operand is less than or equal to the value of right operand, then condition becomes true.</td>
# <td> (a &lt;= b) is true. </td>
# </tr>
# </table>

# What will be the resulting Boolean of the following pieces of code (answer fist then check by typing it in!)

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# Answer before running cell
2 > 3


# In[17]:


# Answer before running cell
3 <= 2


# In[18]:


# Answer before running cell
3 == 2.0


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# Answer before running cell
3.0 == 3


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# Answer before running cell
4**0.5 != 2


# Final Question: What is the boolean output of the cell block below?

# In[ ]:


# 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!