Message180999
Experience teaching Python has shown that people have a hard time learning to work with match objects. A contributing cause is the opaque repr:
>>> import re
>>> s = 'On 3/14/2013, Python celebrate Pi day.'
>>> mo = re.search(r'\d+/\d+/\d+', s)
>>> mo
<_sre.SRE_Match object at 0x100456100>
They could explore the match object with dir() and help() and the matchobject methods and attributes:
>>> dir(mo)
['__class__', '__copy__', '__deepcopy__', ...
'end', 'endpos', 'expand', 'group', ... ]
>>> mo.start()
3
>>> mo.end()
12
>>> mo.group(0)
'3/14/2013'
However, this gets old when experimenting with alternative regular expressions. A better solution is to improve the repr:
>>> re.search(r'\d+/\d+/\d+', s)
<SRE Match object: start=3, stop=12, group(0)='3/14/2013'>
This would make the regular expression module much easier to work with. |
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Date |
User |
Action |
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2013-01-30 23:53:02 | rhettinger | set | recipients:
+ rhettinger |
2013-01-30 23:53:02 | rhettinger | set | messageid: <1359589982.45.0.929656950631.issue17087@psf.upfronthosting.co.za> |
2013-01-30 23:53:02 | rhettinger | link | issue17087 messages |
2013-01-30 23:53:02 | rhettinger | create | |
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