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Regular expression to check if password is “8 characters including 1 uppercase letter, 1 special cha
...tter: You can use the [A-Z]+ regular expression. If the string contains at least one upper case letter, this regular expression will yield true.
One special character: You can use either the \W which will match any character which is not a letter or a number or else, you can use something like so [!...
Does SQLAlchemy have an equivalent of Django's get_or_create?
...ass the session as argument, it might be better to avoid the commit (or at least use only a flush instead). This leaves session control to the caller of this method and won't risk issuing a premature commit. Also, using one_or_none() instead of first() might be slightly safer.
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How to parse freeform street/postal address out of text, and into components
...end and works backwards. That's how the USPS systems do it. Addresses are least ambiguous at the end, where country names, city names, and postal codes are relatively easy to recognize. Street names can usually be isolated. Locations on streets are the most complex to parse; there you encounter t...
How to dynamically update a ListView on Android [closed]
...u are getting? This code is copied w/o a test compile, so I likely left at least one error in there somewhere
– Hamy
Feb 8 '10 at 15:23
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Cookies on localhost with explicit domain
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By design, domain names must have at least two dots; otherwise the browser will consider them invalid. (See reference on http://curl.haxx.se/rfc/cookie_spec.html)
When working on localhost, the cookie domain must be omitted entirely. Just setting it to "" or N...
What do Clustered and Non clustered index actually mean?
...e false statements get repeated as gospel. A clustered indicates that, at least from the perspective of sequential reads, it would be "desirable" to have the rows stored physically on disk in the same order as the index, but that's a far cry from saying that it will cause them to actually be stored...
Why Does OAuth v2 Have Both Access and Refresh Tokens?
...assword again. This might potentially break his robot's automatic flow. At least makes him uncomfortable.
You can see the refresh token has acted perfectly when we try to balance our work, user experience and potential risk of a stolen token. Your watch dog on the server side can check more than I...
Return rows in random order [duplicate]
...D(), 1 and you'll get a list of your quotes orderd by the first column (at least in SQL Server 2005).
– Matt Hamilton
Jul 13 '09 at 5:03
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One-liner to check whether an iterator yields at least one element?
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This works for the case of "at least x" sum(1 for _ in itertools.islice(iterator, max_len)) >= max_len
– Dave Butler
Jan 7 '14 at 19:24
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Require either of two arguments using argparse
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I think you are searching for something like mutual exclusion (at least for the second part of your question).
This way, only foo or bar will be accepted, not both.
import argparse
parser = argparse.ArgumentParser()
group = parser.add_mutually_exclusive_group(required=True)
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