Word boundary detection doesn't seem to work for me in Python re
up vote
0
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I tried using:
>>> wbpat='btestb'
>>> re.findall(wbpat, 'a test tested in testing')
The result that expected to get was ['test'] but somehow I am getting an empty list. What could be the problem...
python regex
asked Nov 20 at 6:41
just inquisitive
1669
add a comment |
up vote
0
down vote
favorite
I tried using:
>>> wbpat='btestb'
>>> re.findall(wbpat, 'a test tested in testing')
The result that expected to get was ['test'] but somehow I am getting an empty list. What could be the problem...
python regex
asked Nov 20 at 6:41
just inquisitive
1669
see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I tried using:
>>> wbpat='btestb'
>>> re.findall(wbpat, 'a test tested in testing')
The result that expected to get was ['test'] but somehow I am getting an empty list. What could be the problem...
python regex
asked Nov 20 at 6:41
just inquisitive
1669
I tried using:
>>> wbpat='btestb'
>>> re.findall(wbpat, 'a test tested in testing')
The result that expected to get was ['test'] but somehow I am getting an empty list. What could be the problem...
python regex
python regex
asked Nov 20 at 6:41
just inquisitive
1669
asked Nov 20 at 6:41
just inquisitive
1669
asked Nov 20 at 6:41
just inquisitive
1669
asked Nov 20 at 6:41
just inquisitive
1669
asked Nov 20 at 6:41
just inquisitive
1669
1669
see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46
add a comment |
see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46
see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46
see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46
add a comment |
1 Answer
1
active
oldest
votes
up vote
4
down vote
b is an escape code for a backspace (length 1 string). Use r'btestb'. The leading r indicates to the Python interpreter that it should interpret each character in the string as a literal single character (a "raw" string) and ignore escape sequences.
Example:
>>> len('btestb') # <backspace>test<backspace>
6
>>> len(r'btestb') # <backslash>btest<backslash>b
8
>>> import re
>>> re.findall(r'btestb','a test tested in testing')
['test']
It's a good habit to use a raw string for regular expressions in Python.
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
4
down vote
b is an escape code for a backspace (length 1 string). Use r'btestb'. The leading r indicates to the Python interpreter that it should interpret each character in the string as a literal single character (a "raw" string) and ignore escape sequences.
Example:
>>> len('btestb') # <backspace>test<backspace>
6
>>> len(r'btestb') # <backslash>btest<backslash>b
8
>>> import re
>>> re.findall(r'btestb','a test tested in testing')
['test']
It's a good habit to use a raw string for regular expressions in Python.
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
add a comment |
up vote
4
down vote
b is an escape code for a backspace (length 1 string). Use r'btestb'. The leading r indicates to the Python interpreter that it should interpret each character in the string as a literal single character (a "raw" string) and ignore escape sequences.
Example:
>>> len('btestb') # <backspace>test<backspace>
6
>>> len(r'btestb') # <backslash>btest<backslash>b
8
>>> import re
>>> re.findall(r'btestb','a test tested in testing')
['test']
It's a good habit to use a raw string for regular expressions in Python.
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
add a comment |
up vote
4
down vote
up vote
4
down vote
b is an escape code for a backspace (length 1 string). Use r'btestb'. The leading r indicates to the Python interpreter that it should interpret each character in the string as a literal single character (a "raw" string) and ignore escape sequences.
Example:
>>> len('btestb') # <backspace>test<backspace>
6
>>> len(r'btestb') # <backslash>btest<backslash>b
8
>>> import re
>>> re.findall(r'btestb','a test tested in testing')
['test']
It's a good habit to use a raw string for regular expressions in Python.
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
b is an escape code for a backspace (length 1 string). Use r'btestb'. The leading r indicates to the Python interpreter that it should interpret each character in the string as a literal single character (a "raw" string) and ignore escape sequences.
Example:
>>> len('btestb') # <backspace>test<backspace>
6
>>> len(r'btestb') # <backslash>btest<backslash>b
8
>>> import re
>>> re.findall(r'btestb','a test tested in testing')
['test']
It's a good habit to use a raw string for regular expressions in Python.
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
edited Nov 20 at 6:52
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
answered Nov 20 at 6:43
Mark Tolonen
89.7k12107175
89.7k12107175
add a comment |
add a comment |
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see also: stackoverflow.com/questions/30164054/…
– Sundeep
Nov 20 at 6:46