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How to apply a function to two columns of Pandas dataframe
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Here's an example using apply on the dataframe, which I am calling with axis = 1.
Note the difference is that instead of trying to pass two values to the function f, rewrite the function to accept a pandas Series object, and then index the Series to get the values needed.
In [49]: df
Out[...
relative path in require_once doesn't work
...rom a different folder and therefore the relatives paths will not work.
Edit: slash problem fixed
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Java: Calling a super method which calls an overridden method
...e is no direct way to call SuperClass.method2() from SuperClass.method1() without going though SubClass.method2() unless you're working with an actual instance of SuperClass.
You can't even achieve the desired effect using Reflection (see the documentation of java.lang.reflect.Method.invoke(Object,...
ImportError in importing from sklearn: cannot import name check_build
... "sklearn" in the same folder. Try running from a different folder. Solved it for me (my fault). Find file with <ls | grep -i "sklearn">
– Punnerud
Mar 3 '18 at 11:50
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
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Culprit: False Data Dependency (and the compiler isn't even aware of it)
On Sandy/Ivy Bridge and Haswell processors, the instruction:
popcnt src, dest
appears to have a false dependency on the destination register dest. Even ...
How to get the client IP address in PHP [duplicate]
...ER['HTTP_X_FORWARDED_FOR'], but this value is easily spoofed. For example, it can be set by someone without a proxy, or the IP can be an internal IP from the LAN behind the proxy.
This means that if you are going to save the $_SERVER['HTTP_X_FORWARDED_FOR'], make sure you also save the $_SERVER['RE...
hasNext in Python iterators?
Haven't Python iterators got a hasNext method?
13 Answers
13
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Where do the Python unit tests go?
If you're writing a library, or an app, where do the unit test files go?
18 Answers
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efficient circular buffer?
I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer).
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How to get the return value from a thread in python?
...utures
def foo(bar):
print('hello {}'.format(bar))
return 'foo'
with concurrent.futures.ThreadPoolExecutor() as executor:
future = executor.submit(foo, 'world!')
return_value = future.result()
print(return_value)
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