Python正则表达式匹配特定单词
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Python regex to match a specific word
提问by casper
I want to match all lines in a test report, which contain words 'Not Ok'. Example line of text :
我想匹配测试报告中包含“Not Ok”字样的所有行。文本行示例：
'Test result 1: Not Ok -31.08'
I tried this:
我试过这个：
filter1 = re.compile("Not Ok")
for line in myfile:
if filter1.match(line):
print line
which should work according to http://rubular.com/, but I get nothing at the output. Any idea, what might be wrong? Tested various other parameters, like "." and "^Test" , which work perfectly.
这应该根据http://rubular.com/工作，但我在输出中一无所获。任何想法，可能有什么问题？测试了各种其他参数，如“。” 和 "^Test" ，它完美地工作。
采纳答案by Ashwini Chaudhary
You should use re.searchhere not re.match.
你应该re.search在这里使用not re.match。
From the docson re.match:
从文档开始re.match：
If you want to locate a match anywhere in string, use search() instead.
如果要在字符串中的任何位置找到匹配项，请改用 search()。
If you're looking for the exact word 'Not Ok'then use \bword boundaries, otherwise
if you're only looking for a substring 'Not Ok'then use simple : if 'Not Ok' in string.
如果您正在寻找确切的单词，'Not Ok'则使用\b单词边界，否则，如果您只是在寻找一个子字符串，'Not Ok'则使用 simple : if 'Not Ok' in string。
>>> strs = 'Test result 1: Not Ok -31.08'
>>> re.search(r'\bNot Ok\b',strs).group(0)
'Not Ok'
>>> match = re.search(r'\bNot Ok\b',strs)
>>> if match:
... print "Found"
... else:
... print "Not Found"
...
Found
回答by Tej91
You could simply use,
你可以简单地使用，
if <keyword> in str:
print('Found keyword')
Example:
例子：
if 'Not Ok' in input_string:
print('Found string')
回答by not2qubit
Absolutely no need to use RegEx in this case! Just use:
在这种情况下绝对不需要使用 RegEx！只需使用：
s = 'Test result 1: Not Ok -31.08'
if s.find('Not Ok') > 0 :
print("Found!")
or as already mentioned:
或者如前所述：
if 'Not Ok' in s:
print("Found!")
