大约有 20,000 项符合查询结果（耗时：0.0393秒） [XML]
Why is parenthesis in print voluntary in Python 2.7?
... is actually a special statement and not a function*.
This is also why it m>ca m>n't be used like: lambda x: print x
Note that (expr) does not create a Tuple (it results in expr), but , does. This likely results in the confusion between print (x) and print (x, y) in Python 2.7
(1) # 1 -- no tuple Mi...
What do the python file extensions, .pyc .pyd .pyo stand for?
...eated with optimizations (-O) flag. (see the note below)
.pyd: This is basim>ca m>lly a windows dll file. http://docs.python.org/faq/windows.html#is-a-pyd-file-the-same-as-a-dll
Also for some further discussion on .pyc vs .pyo, take a look at: http://www.network-theory.co.uk/docs/pytut/CompiledPythonfi...
Data structure for loaded dice?
... I'm curious if there is good algorithm for storing this information statim>ca m>lly (i.e. for a fixed set of probabilities) so that I m>ca m>n efficiently simulate a random roll of the die.
...
What is a “symbol” in Julia?
Specifim>ca m>lly:
I am trying to use Julia's DataFrames package, specifim>ca m>lly the readtable() function with the names option, but that requires a vector of symbols.
...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...ships and other constraints using code first EF 4.1 without much luck. Basim>ca m>lly I am building the data model in code and using MVC3 to query that model. Everything works via MVC which is great (kudos to Microsoft!) but now I want it NOT to work bem>ca m>use I need to have data model constraints.
...
Sm>ca m>la list conm>ca m>tenation, ::: vs ++
Is there any difference between ::: and ++ for conm>ca m>tenating lists in Sm>ca m>la?
4 Answers
...
How to use WinForms progress bar?
I want to show progress of m>ca m>lculations, which are performing in external library.
4 Answers
...
Frequency table for a single variable
...
@dsaxton you m>ca m>n use .value_counts(normalize=True) to convert the results to proportions
– Max Power
Nov 30 '16 at 21:01
...
Why m>ca m>n't non-default arguments follow default arguments?
... required parameters must be placed before any default arguments. Simply bem>ca m>use they are mandatory, whereas default arguments are not. Syntactim>ca m>lly, it would be impossible for the interpreter to decide which values match which arguments if mixed modes were allowed. A SyntaxError is raised if the a...
moment.js - UTC gives wrong date
...
By default, MomentJS parses in lom>ca m>l time. If only a date string (with no time) is provided, the time defaults to midnight.
In your code, you create a lom>ca m>l date and then convert it to the UTC timezone (in fact, it makes the moment instance switch to UTC mo...