Instruction
Good job! Now that we know how to modify lists, let's move on to working with multiple lists at the same time.
The easiest case is when we create a new list based on an existing list. The example below creates a new list that contains some winter temperatures in Fahrenheit (fahrenheit_temperatures) based on temperatures in Celsius (celsius_temperatures).
celsius_temperatures = [-10, -7.78, -5, -2.78, 0, 1.67] fahrenheit_temperatures = [] for time in celsius_temperatures: fahrenheit_temperatures.append(round(time * 1.8 + 32)) print(fahrenheit_temperatures)
Result:
[14, 18, 23, 27, 32, 35]
Before the for loop, we created an empty list named fahrenheit_temperatures. Within the loop, we iterated over the elements of the old list, processed each element, and appended it to a new list.
Exercise
Martha's expenses are currently expressed in USD. Create a new list named monthly_spendings_eur that contains the same expenditures converted into euros. Use the exchange rate of 1 USD = 0.88 EUR.
Round the EUR values to two decimal places using:
round(value, 2)
Then, print monthly_spendings_eur list.
Stuck? Here's a hint!
Create an empty list named monthly_spendings_eur before the for loop. Inside the loop, append new elements based on monthly_spendings elements.
