Question

我的示例文件有一个结构：

Library      Collections
Library      XML    use_lxml=True
Library      ute_wtssim
Library      libraries.ta_infomodel
Library      ute_tshark
Library      PDMLChecker.py
Library    libraries.ta_ue_configuration
Library      libraries.ta_tshark
Library    libraries.ta_file_system
Resource     environment_setup.robot
Variables    ../tshark_filters.py
Variables    ../global_variables.py
Variables    tracing_tshark_filters.py

我想在文件行中找到：Library libraries.ta_infomodel忽略空格（列宽，不是常数）。

你可以给我建议吗？

编辑：我想检查线是否存在... 包含两个关键字的行，忽略之间的空格。

Answer 1

只需使用\s*即可。 \s代表空白。 *表示任意数量（包括零）：

import re
s = '''Library      Collections
Library      XML    use_lxml=True
Library      ute_wtssim
Library      libraries.ta_infomodel
Library      ute_tshark
Library      PDMLChecker.py
Library      resources.DevWro1.pdml_validation.PdmlValidation
Library    libraries.ta_ue_configuration
Library      libraries.ta_tshark
Library    libraries.ta_file_system
Resource     environment_setup.robot
Variables    ../tshark_filters.py
Variables    ../global_variables.py
Variables    tracing_tshark_filters.py'''

matches = re.findall('Library\s*libraries\.ta_infomodel', s)

for match in matches:
    print(match)

Answer 2

试试这个：

content = """
Library      Collections
Library      XML    use_lxml=True
Library      ute_wtssim
Library      libraries.ta_infomodel
Library      ute_tshark
Library      PDMLChecker.py
Library      resources.DevWro1.pdml_validation.PdmlValidation
Library    libraries.ta_ue_configuration
Library      libraries.ta_tshark
Library    libraries.ta_file_system
Resource     environment_setup.robot
Variables    ../tshark_filters.py
Variables    ../global_variables.py
Variables    tracing_tshark_filters.py
"""

import re
regex = re.compile(r'Library\s+libraries\.ta_infomodel')
line = regex.search(content)

一些解释。为了通过正则表达式找到一行，您应该使用re.search，对于许多re.findall。

\s+ - 适用于多个空格。

\. - 为点。使用必须添加斜杠，因为只是dot表示任何字符。

Answer 3

也可以用列表理解来完成

import re
lines = open(fname, 'r').readlines()
found = [s for s in lines if re.match(".* Library\s+libraries\.ta_infomodel.*", s)]

Python检查是否存在行（两个关键字）忽略之间的空格

3 个答案: