re.search : how is this supposed to work?

Question

in this re.search function I dont know where i can place my raw source.. as in doesn't the re.search function need a place you want it to look at?
i am getting an erroe saying it is missing a positional argument
```escapes.py
import re
def first_number(expr):
    return re.search(r'\d',expr)
def numbers(cnt,str):
    return re.search(r'\str' * cnt)
```

Jonathan Grieve · Accepted Answer

The numbers function isn't quite right.  I think what you need to do there is cast the return value as a string, so you get the required number of numbers in your result.
So... the reference to re. is simply calling the regular expression library so you can use search and match methods. 
You're right to try and multiply in your return.  But you just need a simple regular expression and then reference your function arguments  in your call to search.
So simply...
python
    return re.search(r'\d' * cnt, str)

Welcome to the Treehouse Community

Looking to learn something new?

sarvienn thevendran

sarvienn thevendran

re.search : how is this supposed to work?

1 Answer

Jonathan Grieve

Jonathan Grieve