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Getting the last element of a list
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3253
some_list[-1] is the shortest and most Pythonic.
In fact, you can do much more with this syn...
In PyCharm, how to go back to last location?
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Under ArchLinux with PyCharm CE 3.1 works the combination Ctrl + Alt + Left.
This is the way I find out the combination:
(Right click) Go To -> Implementation(s)
Double Shift -> Back
There is an option Back in the section Actions
Ctrl + Shift + A
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Import pandas dataframe column as string not int
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3 Answers
3
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Using python's eval() vs. ast.literal_eval()?
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193
datamap = eval(raw_input('Provide some data here: ')) means that you actually evaluate the code ...
How can I get list of values from dict?
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539
Yes it's the exact same thing in Python 2:
d.values()
In Python 3 (where dict.values returns...
How do I get the number of elements in a list?
...both built-in types and library types. For example:
>>> len([1,2,3])
3
Official 2.x documentation is here: len()
Official 3.x documentation is here: len()
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...ter expands to a separate word. That is "$@" is equivalent to "$1" "$2" "$3"....
Passing some arguments:
If you want to pass all but the first arguments, you can first use shift to "consume" the first argument and then pass "$@" to pass the remaining arguments to another command. In bash (and zsh ...
Convert a byte array to integer in Java and vice versa
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235
Use the classes found in the java.nio namespace, in particular, the ByteBuffer. It can do all ...
How to find the length of a string in R
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See ?nchar. For example:
> nchar("foo")
[1] 3
> set.seed(10)
> strn <- paste(sample(LETTERS, 10), collapse = "")
> strn
[1] "NHKPBEFTLY"
> nchar(strn)
[1] 10
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Extract traceback info from an exception object
...to this question depends on the version of Python you're using.
In Python 3
It's simple: exceptions come equipped with a __traceback__ attribute that contains the traceback. This attribute is also writable, and can be conveniently set using the with_traceback method of exceptions:
raise Exceptio...