Question

我有一段代码对文件进行排序，然后在屏幕上打印格式化的输出

.add

当我运行它时，给我这样的东西：

p1 = subprocess.Popen(('sort', '-nr',tempfile), stdout=subprocess.PIPE)
p2 = subprocess.Popen (('awk', '{print \""$2"\\":\" $1\"},\"} ' ),stdin=p1.stdout)

但是我只需要：

/tmp/whois.conf":382},
/tmp/yum.conf":970},
/tmp/hi/bhutpret":0},

它也为最后一行打印逗号“，”。如何通过程序从控制台删除此已打印的逗号？

Answer 1

请不要在最后一行打印逗号。

import subprocess
tempfile='input.txt'
p1 = subprocess.Popen(('sort', '-nr',tempfile), stdout=subprocess.PIPE)
p2 = subprocess.Popen (('awk', r'NR > 1 { printf(",\n") } { printf("%s\":%s}", $2, $1) } END{print ""}'),stdin=p1.stdout)

输出：

is":Pizza},
the":Keep},
really":I},
someone":Did}

我的文件“ input.txt”

I really love christmas
Keep the change ya filthy animal
Pizza is my fav food
Did someone say peanut butter?

从屏幕上删除最后打印的字符

1 个答案: