Python re Regular Expression (Regex) Positive Look Behind

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2

re.match() looks at the begnning of the string for the match. Try using re.search() or re.findall() instead.

import re

pattern = r'(?<=TDY)[0-9][1-9]'
stringIn = '/XYZ01/TDY01/L01'

# using re.findall
print re.findall(pattern, stringIn)

# using re.search
search = re.search(pattern, stringIn)
if search:
	print 'Found:', search.group()
else:
	print 'Not found'

output:

['01']
Found: 01
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