What does regex return to Python if it can't find a match in the string?
I'm trying to write an if function in python. I have a list which contains 2 different ends of strings, and I'm trying to test the first regex and if it can't find anything, use else to run the other regex search.
Is there another way I could approach this problem?
The strings in the list end like:
1. ...at Company A; Price $84
2. ...at Company B
I'm just looking to pull out Company A and Company B
I've already tried == None, [], '', False
in the if function.
Here is my code for the Regex patterns. Both patterns work as I tested them separately for the entire list:
analystcompanypattern = re.compile('(?<=at )(.*)(?=;)')
analystcompanypattern_noPrice = re.compile('(?<=at )(\w+)$')
if str(analystcompanypattern_noPrice.findall(test)) == None:
analyst_company = str(analystcompanypattern.findall(test))
else:
analyst_company = str(analystcompanypattern_noPrice.findall(test))
I'm trying to figure out what to put where None is if regex can't find a match, getting analyst companies for values ending with the price and getting [] for ending like 2., for strings with 'company'.
It returns a list with the matched sequence(s). If there is no match, the list will be empty.
To test if the list is empty or not:
if len(analystcompanypattern_noPrice.findall(test)) == 0:
you can try (no need for conditions)
re.search('at ([^;]*)',str)
>>> str='...at Company B'
>>> m = re.search('at ([^;]*)',str)
>>> m.group(1)
>>> 'Company B'
>>>
>>>
>>> str='...at Company A;price 2'
>>> m = re.search('at ([^;]*)',str)
>>> m.group(1)
>>> 'Company A'
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