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Parsing domain from a URL
I need to build a function which parses the domain from a URL.
18 Answers
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Explaining Python's '__enter__' and '__exit__'
...plained above, use this object with the with statement (you may need to do from __future__ import with_statement at the top of the file if you're on Python 2.5).
with DatabaseConnection() as mydbconn:
# do stuff
PEP343 -- The 'with' statement' has a nice writeup as well.
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Is there a way to reduce the size of the git folder?
...r possibly relevant command is git clean which will delete untracked files from your tree (manual page).
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Is there a Python caching library?
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From Python 3.2 you can use the decorator @lru_cache from the functools library.
It's a Last Recently Used cache, so there is no expiration time for the items in it, but as a fast hack it's very useful.
from functools import...
Creating dataframe from a dictionary where entries have different lengths
...( A = np.array([1,2]), B = np.array([1,2,3,4]) )
In[21]: df = pd.DataFrame.from_dict(my_dict, orient='index')
In[22]: df
Out[22]:
0 1 2 3
A 1 2 NaN NaN
B 1 2 3 4
In[23]: df.transpose()
Out[23]:
A B
0 1 1
1 2 2
2 NaN 3
3 NaN 4
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How do you avoid over-populating the PATH Environment Variable in Windows?
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EDIT 4: In case you decide to use batch files to eliminate certain paths from %PATH%, you might be concerned about how to pass on arguments from your batch file to your executable such that the process is transparent (i.e., you won't notice any difference between calling the batch file and calling...
Why does auto a=1; compile in C?
...so the same as int a in this example.
This keyword is actually a leftover from C's predecessor B, where there were no base types: everything was int, pointer to int, array of int.(*) Declarations would be either auto or extrn [sic]. C inherited the "everything is int" as a default rule, so you coul...
Why fragments, and when to use fragments instead of activities?
...le by using includes). However; fragments are wired in to the Android API, from HoneyComb, and up. Let me elaborate;
The ActionBar. If you want tabs up there to navigate your app, you quickly see that ActionBar.TabListener interface gives you a FragmentTransaction as an input argument to the onTab...
What can , and be used for?
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Send params from View to an other View, from Sender View to Receiver View use viewParam and includeViewParams=true
In Sender
Declare params to be sent. We can send String, Object,…
Sender.xhtml
<f:metadata>
<f:viewPara...
Why aren't superclass __init__ methods automatically invoked?
...__new__". As you yourself note, __new__ behaves nothing like a constructor from other languages. __init__ is in fact very similar (it is called during the creation of a new object, after that object is allocated, to set member variables on the new object), and is almost always the place to implement...