Where can i reference the "regular expressions"

[John Smithury]

Dear pythoners,

I'm a new member to studay the python, i wan't to studay the "regular
expressions" handle like below:

==============source============
<line>the</line>
<line>is</line>
<line>name</line>
==============source end=========


after convert, the result like below:

-------------------------result------------------------
{'t','t','e'},
{'i','s'},
{'n','a','m','e'}
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