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

# # Python Fundamentals: Introduction to Jupyter and Python 
# # SOLUTIONS

# ## 🥊 Challenge 1: Printing 
# 
# Write your own `print` statement in the code cell below. Follow the syntax of the example above, and change the text in the quotation marks.

# In[1]:


# Write your own awesome print statement here!
print('Hi, I\'m Tom')


# ## 🥊 Challenge 2: Executing Cells Multiple Times
# 
# Try using **Shift + Enter** to run the following cell three times. What is the output? Run the cell one more time. Is the output the same?

# ANSWER: `a` keeps increasing. This is because each time we run the cell, the value in memory is updated and 1 is added.

# ## 🥊 Challenge 3: Debugging Variable Names
# 
# The following two blocks of code include variable names that cause an error. For each block of code, consider the following questions:
# 1. Which rule is being broken? Can you find this information in the error message?
# 2. What guidelines aren't being followed? 
# 3. How would you change the code?

# In[2]:


# use consistent style (e.g. snake case)
avg_age = 30.332
another_variable = 28.801
print(avg_age - another_variable)


# In[3]:


# Variable names cannot include symbols like .
country_1 = 'Zimbabwe'

# Variable names are case-sensitive 
continent = 'Africa'

print(country_1, 'is a country in', continent)


# ## 🥊 Challenge 4: What The...
# 
# What does the following error seem to tell you? Google the error and see if you can fix it!

# In[4]:


# SyntaxError: unmatched ')'
# We need to remove the second closing parenthesis
print('something went wrong')


# ## 🥊 Challenge 5: Swapping Values
# 
# Let's say we have two variables and we want to swap the values for each of them. 
# 
# Does the following method accomplish the goal?
# 
# 💡 **Tip**: What is the value of first and last at the end of the cell?

# In[5]:


start = 1997
end = 1952

start = end
end = start


# Using a third temporary variable (you could call it `temp`), swap the first and last variables, so that `start = 1952` and `end = 1997`.

# In[6]:


start = 1997
end = 1952

# YOUR CODE HERE
temp = start
start = end
end = temp

print(start,end)