Python regular quantifiers

In a regular expression, you can use quantifiers to limit the number of times the previous word repeats, as shown below:

In [11]: regexp = r "j \ w {3, 6 }"

But why is there no result in the following program?

In [9]: import reIn [10]: s = "www.jeapedu.com" * 4In [11]: regexp = r "j \ w {3, 6}" In [12]: patObj = re. compile (regexp) In [13]: ret = patObj. findall (s)

After suffering, I finally found that there could not be spaces on the front of the six sides. I usually use space for programming. Why don't I have a book to remind me?

After correction, remove the space behind the comma to get the result.

(There is no problem in windows. There are spaces. In Linux, there must be no space. Otherwise, it is wrong. Have you ever encountered this problem? Haha !)