import numpy as np taxi = np.genfromtxt('nyc_taxis.csv', delimiter=',',skip_header = True)
speed= taxi[:, 7]/(taxi[:, 8]/3600) mean_speed = speed.mean() print(mean_speed)
feb_rides = taxi[taxi[:, 1] == 2, 1] print(feb_rides.shape[0])
big_tips= taxi[taxi[:,-3]>50 ,-3] print(big_tips.shape[0])
dropoff_jfk= taxi[taxi[:, 6]==2 , 6] print(dropoff_jfk.shape[0])