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Python Functional Python Functional Workhorses Map and Filter Comprehension

Posted by Ross Peace
Ross Peace
Courses Plus Student 17,401 Points

list comprehension

As a dumb American, I don't understand Celsius temperatures. Using c_to_f and a list comprehension, create a variable named good_temps. Convert each Celsius temperature into Fahrenheit, but only if the Celsius temperature is between 9 and 32.6.

temps.py 
temperatures = [
    37,
    0,
    25,
    100,
    13.2,
    29.9,
    18.6,
    32.8
]


def c_to_f(temp):
    """Returns Celsius temperature as Fahrenheit"""
    return temp * (9/5) + 32

def is_9_32_6(temp):
  return  (temp >= 9) and (temp <= 32.6)

good_temps = [is_9_32_6(temp) for temp in map(c_to_f, temperatures)]

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Close, but you're converting the temperatures first with map, and then using the list comprehension to return a true or false for each based on if the converted temperature is in the range.

But you want to return a converted temperature for each Celsius one that falls in the range.

Hint: you won't need a map.

And if you still can't get it...

:warning: SPOILER ALERT

good_temps = [c_to_f(temp) for temp in temperatures if is_9_32_6(temp)]
Ross Peace
Ross Peace
Courses Plus Student 17,401 Points

Great It works

Thank you