Day 4 Review

Yesterday we looked at functions and I/O.

Functions

# define a function that prints greetings
def greetings(name):
    print("Hi {}! How are you today?".format(name))

# call this function 
greetings("Dora")

Hi Dora! How are you today?

# define a function that returns something 
def am_i_odd(number):
    if number % 2 == 0:
        return False
    else:
        return True

print(am_i_odd(5))
print(am_i_odd(81726))

True
False

Input/output

# get input from a user
name = input("Hi! What is your name? ")

Hi! What is your name?  Alice

# read from a file 
with open('secret_message.txt', 'r') as my_file:
    print(my_file.read())

TOP SECRET BROWNIES RECIPE

Yield: 25-30 brownies 

Ingredients

1 cup + 2 tbsp milk 
1/2 cup + 3 tbsp oil
1 tbsp pure vanilla extract
1 cup all purpose flour
1 cup unsweetened cacao or cocoa powder
1/4 tsp + 1/8 tsp salt
1/2 tsp baking powder
1/2 cup brown sugar
1/3 cup white sugar
2 tbsp cornstarch 

Instructions

Whisk together the first 3 ingredients, then set aside. Preheat oven to 330F. 
Grease a 9×13 pan (or 8×8 for thick brownies), or line with parchment paper, 
and set aside. In a large mixing bowl,thoroughly combine all dry ingredients. 
Stir wet into dry. Pour into the prepared pan. Smooth down. Bake 16 minutes, 
or 24 if using an 8×8. The brownies will look a little underdone when they 
come out, but that’s okay! Refrigerate – they start to firm up after a few 
hours and are nice and cut-able by the next day, and the taste is much better 
the next day as well. Store in the refrigerator for up to 4 days, or freeze.

https://bit.ly/2k9AGI9

# Write to a file
message = """
Hi Gran!

Thanks for the brownies recipe. I'm sure that these are 
going to sell great at the bake sale this weekend!

Love,
Tess
"""

with open("my_reply.txt", 'w') as output_file:
    output_file.write(message)

Back to day 5