如何将CSV文件中的行中的值附加到python中的列表中？

Question

If I have a csv file with only two rows containing an x and y coordinate, how would I go about taking row[0] and all its x points and appending them to a list?

In other words, lets say I have a list:

[[1,2], [3,5]]

Is there a way to take 1 and 3 and put them into a new list, and then 2 and 5 into another list?

Answer 1

points = [[1,2], [3,5]] #[[x,y],[x,y]]
x,y = zip(*points) #x = [1,3],y=[2,5]

this is an easy way to transpose any 2d array (take the rows and change them to columns)

if you had 3d points for example

points = [[1,2,3],[2,3,4],[4,5,6]]
x,y,z = zip(*points)

you can get your points from the csv

points = list(csv.reader(open("my_file.csv")))