如何获取下面'str'中'uniprotkb:'和'(基因名称)'之间的所有值:
str = 'uniprotkb:HIST1H3D(gene name)|uniprotkb:HIST1H3A(gene name)|uniprotkb:HIST1H3B(gene name)|uniprotkb:HIST1H3C(gene name)|uniprotkb:HIST1H3E(gene name)|uniprotkb:HIST1H3F(gene name)|uniprotkb:HIST1H3G(gene name)|uniprotkb:HIST1H3H(gene name)|uniprotkb:HIST1H3I(gene name)|uniprotkb:HIST1H3J(gene name)'
结果是:
HIST1H3D
HIST1H3A
HIST1H3B
HIST1H3C
HIST1H3E
HIST1H3F
HIST1H3G
HIST1H3H
HIST1H3I
HIST1H3J
答案 0 :(得分:8)
使用re.findall(),您可以获得与正则表达式匹配的字符串的所有部分:
>>> import re
>>> sstr = 'uniprotkb:HIST1H3D(gene name)|uniprotkb:HIST1H3A(gene name)|uniprotkb:HIST1H3B(gene name)|uniprotkb:HIST1H3C(gene name)|uniprotkb:HIST1H3E(gene name)|uniprotkb:HIST1H3F(gene name)|uniprotkb:HIST1H3G(gene name)|uniprotkb:HIST1H3H(gene name)|uniprotkb:HIST1H3I(gene name)|uniprotkb:HIST1H3J(gene name)'
>>> re.findall(r'uniprotkb:([^(]*)\(gene name\)', sstr)
['HIST1H3D', 'HIST1H3A', 'HIST1H3B', 'HIST1H3C', 'HIST1H3E', 'HIST1H3F', 'HIST1H3G', 'HIST1H3H', 'HIST1H3I', 'HIST1H3J']
答案 1 :(得分:0)
这是一个oneliner:
astr = 'uniprotkb:HIST1H3D(gene name)|uniprotkb:HIST1H3A(gene name)|uniprotkb:HIST1H3B(gene name)|uniprotkb:HIST1H3C(gene name)|uniprotkb:HIST1H3E(gene name)|uniprotkb:HIST1H3F(gene name)|uniprotkb:HIST1H3G(gene name)|uniprotkb:HIST1H3H(gene name)|uniprotkb:HIST1H3I(gene name)|uniprotkb:HIST1H3J(gene name)'
[pt.split('(')[0] for pt in astr.strip().split('uniprotkb:')][1:]
给出:
['HIST1H3D',
'HIST1H3A',
'HIST1H3B',
'HIST1H3C',
'HIST1H3E',
'HIST1H3F',
'HIST1H3G',
'HIST1H3H',
'HIST1H3I',
'HIST1H3J']
如果运行时很重要,我不推荐使用regexp解决方案。
答案 2 :(得分:-1)
我不打扰正则表达式:
s = 'uniprotkb:HIST1H3D(gene name)|uniprotkb:HIST1H3A(gene name)' # etc
gene_names = []
for substring in s.split('|'):
removed_first = substring.partition('uniprotkb:')[2] # remove the first part of the substring
removed_second = removed_first.partition('(gene name)')[0] # remove the second part
gene_names.append(removed_second) # put it on the list
应该做的伎俩。你甚至可以单行 - 上面相当于:
gene_names = [substring.partition('uniprotkb:')[2].partition('(gene name)')[0] for substring in s.split('|')]