我有一个带输入的文件:
rownum,identifier,items_in_list
1,"ABC",{(123),(345),(69),(95),(90),(83),(3A)}
预期输出为:
rownum,identifier,items_in_list
1,"ABC",123
1,"ABC",345
1,"ABC",69
1,"ABC",95
1,"ABC",90
1,"ABC",83
1,"ABC",3A
我尝试使用" awk"但它是用于将列中的所有项目都转换为行,但是我只需要一些列到行..
我的代码:
echo "1,"ABC",{(123),(345),(69),(95),(90),(83),(3A)}" | awk -vRS="{" 'NF'
但是转换为:
1,ABC,
(123),(345),(69),(95),(90),(83),(3A)}
更新
你的所有命令都运行良好,但是对于一个小故障抱歉作为一个新手,我只能投一个作为答案。
谢谢!但是我遇到麻烦,如果行没有多个数字并只有一个......例如,采用以下格式:
输入
1,33262,"ABC",{(64)}
1,33263,"ABC",{(66),(57)}
实际输出:
1,33262,SOME_FIELD_NAME
1,33262,64
1,33263,SOME_FIELD_NAME
1,33262,65,66
必需输出:
1,33262,SOME_FIELD_NAME,64
1,33263,SOME_FIELD_NAME,65
1,33263,SOME_FIELD_NAME,66
更新:
"实际输出" Jotne建议的代码:awk -F,' {a = $ 1"," $ 2; gsub(/ [{()}] /,""); for(i = 3; i< = NF; i ++)打印"," $ i}'文件。
很抱歉,我的输入有时会有2个前导字段,有时会有3到10个前导字段,但我们要转换为列的行始终以' {' ,个别号码包含在'()'行的结尾用'}'表示。 Jotne的代码适用于2个主要领域,但3个领先领域失败。有人可以建议一种解析字段的通用方法吗?
答案 0 :(得分:0)
这是awk
awk -F, '{a=$1","$2;gsub(/[{()}]/,"");for (i=3;i<=NF;i++) print a","$i}' file
1,"ABC",123
1,"ABC",345
1,"ABC",69
1,"ABC",95
1,"ABC",90
1,"ABC",83
1,"ABC",3A
使用RS
awk -vRS=, '{gsub(/[{()}]/,"")} NR==1 {a=$1;next} NR==2 {a=a","$1;next} {print a","$1}' file
1,"ABC",123
1,"ABC",345
1,"ABC",69
1,"ABC",95
1,"ABC",90
1,"ABC",83
1,"ABC",3A
答案 1 :(得分:0)
如果您仍在寻找Python解决方案:
input = '1,"ABC",{(123),(345),(69),(95),(90),(83),(3A)}'
for extra_char in '{}()"':
input = input.replace(extra_char, '')
input_elems = input.split(',')
rownum, identifier = input_elems[0:2]
for item in input_elems[2:]:
print rownum, identifier, item
答案 2 :(得分:0)
基于Python的解决方案:
import csv
import re
data = ['rownum,identifier,items_in_list',
'1,"ABC",{(123),(345),(69),(95),(90),(83),(3A)}']
reader = csv.reader(data) # change data to open(filename, 'rb')
pat = r'{*\(([0-9a-fA-F]+)\)}*'
next(reader)
for row in reader:
for elem in row[2:]:
mat = re.search(pat, elem).group(1)
print(','.join([row[0], '"{}"'.format(row[1]), mat]))
输出:
1,"ABC",123
1,"ABC",345
1,"ABC",69
1,"ABC",95
1,"ABC",90
1,"ABC",83
1,"ABC",3A
答案 3 :(得分:0)
awk -F, '{gsub(/)./,ORS); gsub(/(^[^(]+)?[(]/,$1 OFS $2 OFS); printf "%s",$0}' file
1,"ABC",123
1,"ABC",345
1,"ABC",69
1,"ABC",95
1,"ABC",90
1,"ABC",83
1,"ABC",3A