python中如何读取csv

with open("fileName.csv") as file:

     for line in  file:

         print line

import csv

csv_reader = csv.reader(open("fileName.csv"))

for row in csv_reader:

    print row

import pandas as pd

data = pd.read_csv("fileName.csv")

print data

data = pd.read_table("fileName.csv",sep=",")

print data