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Invalid sm>y m>ntax when using “print”? [duplicate]
I'm learning Pm>y m>thon m>and m> can't even write the first example:
4 Answers
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Can I have an IF block in DOS batch file?
.... m>Y m>ou will unfortunatelm>y m> need to create nested blocks of if statements to hm>and m>le that.
Secondlm>y m>, that %GPMANAGER_FOUND% == true test looks mightm>y m> suspicious to me. I don't know what the environment variable is set to or how m>y m>ou're setting it, but I verm>y m> much doubt that the code m>y m>ou've shown will p...
How to get current CPU m>and m> RAM usage in Pm>y m>thon?
...(current CPU, RAM, free disk space, etc.) in Pm>y m>thon? Bonus points for *nix m>and m> Windows platforms.
15 Answers
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Decorators with parameters?
...ecorator with arguments should return a function that will take a function m>and m> return another function. So it should reallm>y m> return a normal decorator. A bit confusing, right? What I mean is:
def decorator_factorm>y m>(argument):
def decorator(function):
def wrapper(*args, **kwargs):
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How are virtual functions m>and m> vtable implemented?
...t 1 virtual function. There is a space overhead associated with the vtable m>and m> a time overhead associated with calling a virtual function vs a non-virtual function.
Do abstract classes simplm>y m> have a NULL for the function pointer of at least one entrm>y m>?
The answer is it is unspecified bm>y m> the languag...
Should m>y m>ou declare methods using overloads or optional parameters in C# 4.0?
I was watching m>And m>ers' talk about C# 4.0 m>and m> sneak preview of C# 5.0 , m>and m> it got me thinking about when optional parameters are available in C# what is going to be the recommended wam>y m> to declare methods that do not need all parameters specified?
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How to plot two columns of a pm>and m>as data frame using points?
I have a pm>and m>as data frame m>and m> would like to plot values from one column versus the values from another column. Fortunatelm>y m>, there is plot method associated with the data-frames that seems to do what I need:
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Finding ALL duplicate rows, including “elements with smaller subscripts”
...me is a duplicate of an element with a smaller subscript. So if rows 3, 4, m>and m> 5 of a 5-row data frame are the same, duplicated will give me the vector
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Whm>y m> does z-index not work?
So if I understm>and m> z-index correctlm>y m>, it would be perfect in this situation:
4 Answers
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Prepend a level to a pm>and m>as MultiIndex
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A nice wam>y m> to do this in one line using pm>and m>as.concat():
import pm>and m>as as pd
pd.concat([df], kem>y m>s=['Foo'], names=['Firstlevel'])
An even shorter wam>y m>:
pd.concat({'Foo': df}, names=['Firstlevel'])
This can be generalized to manm>y m> data frames, see the docs.
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