python csv 模塊reader後轉換為列表
阿新 • • 發佈:2017-08-31
ble app try proto which -m 實現 all supports
fh = open("mylist_wincsv.csv", ‘rt‘) reader = csv.reader(fh) data = list(reader) print "Data cells from CSV:" print data[0][1], data[1][1] print data[0][2], data[1][2] print data[0][3], data[1][3]
以上是書上的代碼。可是無法實現。len(list(reader)) =0
查詢官網知道。reader=csv.reader(fh)
Return a reader object which will iterate over lines in the given csvfile. csvfile can be any object which supports the iterator protocol and returns a string each time its __next__()
method is called — file objects and list objects are both suitable
所以嘗試代碼換下
import csv fh=open("mylist.csv",‘rt‘) a=[] try: reader=csv.reader(fh) for row in reader: a.append(row) except Exception as e: print("Exception is:",e) finally: fh.close() print(a[1][0])
這樣就可以了
python csv 模塊reader後轉換為列表