What is the difference between matchObj.group() and matchObj.group(0)

[MRAB]

On 2014-07-06 19:26, rxjwg98 at gmail.com wrote:
> Hi,
>
> I cannot get the difference between matchObj.group() and matchObj.group(0),
> Although there definitions are obvious different. And group() mentions 'tuple'.
> tuple means all the elements in line object?
>
>
>
> Match Object Methods
>
> Description
>
> group(num=0) This method returns entire match (or specific subgroup num)
> groups()     This method returns all matching subgroups in a tuple
>               (empty if there weren't any)
>
>
>
> I run the following code. Even I add more words to line object, Both have the
> same output.
>
> Could you clarify this question?
>
matchObj.group(g) returns what was captured by group g.

If you don't specify the group, it'll assume that you want group 0,
which is the entire part of the string that matched.