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Hello I am new into regex and I'm starting out with python. I'm stuck at extracting all words from an English sentence. So far I have:
import re
shop="hello seattle what have you got"
regex = r'(\w*) '
list1=re.findall(regex,shop)
print list1
This gives output:
['hello', 'seattle', 'what', 'have', 'you']
If I replace regex by
regex = r'(\w*)\W*'
then output:
['hello', 'seattle', 'what', 'have', 'you', 'got', '']
whereas I want this output
['hello', 'seattle', 'what', 'have', 'you', 'got']
Please point me where I am going wrong.
994
“\\w+” A word character: [a-zA-Z_0-9] “\\W+”: A non-word character: [^\w] “\\1”: Matches whatever was matched in the 1st group of parentheses, which in this case is the (\w+) “+”: Match whatever it's placed after 1 or more times.
The word boundary \b matches positions where one side is a word character (usually a letter, digit or underscore—but see below for variations across engines) and the other side is not a word character (for instance, it may be the beginning of the string or a space character).
Use word boundary \b
import re
shop="hello seattle what have you got"
regex = r'\b\w+\b'
list1=re.findall(regex,shop)
print list1
OP : ['hello', 'seattle', 'what', 'have', 'you', 'got']
or simply \w+ is enough
import re
shop="hello seattle what have you got"
regex = r'\w+'
list1=re.findall(regex,shop)
print list1
OP : ['hello', 'seattle', 'what', 'have', 'you', 'got']
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