[Tutor] Regular expression - I

[Santosh Kumar]

Hi All,

If you notice the below example, case I is working as expected.

Case I:
In [41]: string = "<H*>test<H*>"

In [42]: re.match('<H\*>',string).group()
Out[42]: '<H*>'

But why is the raw string 'r' not working as expected ?

Case II:

In [43]: re.match(r'<H*>',string).group()
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-43-d66b47f01f1c> in <module>()
----> 1 re.match(r'<H*>',string).group()

AttributeError: 'NoneType' object has no attribute 'group'

In [44]: re.match(r'<H*>',string)



Thanks,
santosh
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