Python csv将列表写入文件

Question

我正在编写一个脚本来编写一个列表，其中包含如下分隔的选项卡到一个 csv 文件。但我没有得到正确的输出。

out_l = ['host\tuptime\tnfsserver\tnfs status\n', 'node1\t2\tnfs_host\tok\n', 'node2\t100\tnfs_host\tna\n', 'node3\t59\tnfs_host\tok\n']

代码:

out_f = open('test.csv', 'w')
w = csv.writer(out_f)

for l in out_l:
    w.writerow(l)
out_f.close()

输出 csv 文件如下所示。

h,o,s,t,    ,s,s,h, , , , , ,s,u,d,o,_,h,o,s,t, , , , , , , ,n,f,s,"
"1,9,2,.,1,6,8,.,1,2,2,.,2,0,1, ,o,k,   ,n,f,s,h,o,s,t, ,o,k,"
"1,9,2,.,1,6,8,.,1,2,2,.,2,0,2, ,f,a,i,l,e,d,   ,n,a,   ,n,a,"
"1,9,2,.,1,6,8,.,1,2,2,.,2,0,3, ,o,k,   ,n,f,s,h,o,s,t, ,s,h,o,w,m,o,u,n,t, ,f,a,i,l,e,d,"

"

我还检查了 csv.writer 选项，如分隔符、方言 = excel，但没有运气。
有人可以帮助格式化输出吗？

Answer 1

使用 out_l 中的格式，您可以将其写入文件:

out_l = ['host\tuptime\tnfsserver\tnfs status\n', 'node1\t2\tnfs_host\tok\n', 'node2\t100\tnfs_host\tna\n', 'node3\t59\tnfs_host\tok\n']

with open('test.csv', 'w') as out_f:
    for l in out_l:
        out_f.write(l)

正确使用 csv , out_l应该只是列的列表，让 csv模块使用制表符和换行符进行格式化:

import csv

out_l = [['host','uptime','nfsserver','nfs status'],
         ['node1','2','nfs_host','ok'],
         ['node2','100','nfs_host','na'],
         ['node3','59','nfs_host','ok']]

#with open('test.csv', 'wb') as out_f:           # Python 2
with open('test.csv', 'w', newline='') as out_f: # Python 3
    w = csv.writer(out_f, delimiter='\t')        # override for tab delimiter
    w.writerows(out_l)                           # writerows (plural) doesn't need for loop

请注意 with会自动关闭文件。

见 csv documentation了解打开文件以供 csv.reader 使用的正确方法或 csv.writer .