I dont really understand why heights its mentioned again at the start of can_ride_coaster

heights = [161, 164, 156, 144, 158, 170, 163, 163, 157]

can_ride_coaster = [height for height in heights if height > 161

While it is missing the closing square bracket, what you have there is a list comprehension. It is common to see singular and plural terms used in this way…

for height in heights

height is the iteration variable. It could be any term, but the singular is a best fit in terms of reader analysis, later.

[x for x in heights if x > 161]

will have the exact same effect.

The net effect of the entire piece of code, is a filter since only values that meet with the condition will be included in the finished list.

[164, 170, 163, 163]