'''
For this exercise, you can use the following documentation:
https://docs.python.org/3/library/stdtypes.html#numeric-types-int-float-complex

# An important opener

In Python, you can print the value of variables, which is an easy way to see 
whether your code was effective. You can do so using the `print()` function; 
put the statement or variable you want to print between the brackets. 

Run the following cell to print the sentence "Hello world!".
'''

print("Hello world!")

'''
# Numeric types

A numeric variable, or quantitative variable, is simply a number. 
There are integers, which are whole numbers; floats, which are essentially 
decimals; and complex numbers. Note that in Python, the complex number i 
is represented by a j!

First, define an integer:
'''

integer1 = # Define an integer here
print("The type of integer1 is ", type(integer1)) # The print command allows you to see what the type is.

'''
Now, define a float:
'''

float1 = # Define a float here
print("The type of float1 is ", type(float1))

'''
Add your integer and your float together. You can do so by using the `+` 
operator. Check what is the type of the sum using `print()` and `type()` 
as in the exercise above.
'''

sum_integer_and_float = 
# Write code to print the type

'''
As you can see from the examples above, you do not have to define the type of 
the variable yourself; Python will do this for you. This is very convenient, 
since you can simply define variables and do math without having to worry about 
the type.

Define a complex variable:
'''

complex1 = # Define a complex number here
print("The type of complex1 is ", type(complex1))

''' 
Add your float and your complex number together. What happens? Why?
# Answer the question here
'''

sum_float_and_complex =