I believe the syntax you were looking for is as follows:
import csv
with open('coors.csv', mode="r") as infile:
reader = csv.reader(infile)
with open('coors_new.csv', mode="w") as outfile:
writer = csv.writer(outfile)
mydict = {rows[0]:rows[1] for rows in reader}
Alternately, for python <= 2.7.1, you want:
mydict = dict((rows[0],rows[1]) for rows in reader)