大约有 11,000 项符合查询结果(耗时:0.0313秒) [XML]

https://stackoverflow.com/ques... 

Display help message with python argparse when script is called without any arguments

... @NunoAndré thanks - updated the answer. Feels more pythonic indeed. – Ievgen Popovych Jul 23 '18 at 14:40 ...
https://stackoverflow.com/ques... 

Why can't non-default arguments follow default arguments?

...is you", b="True"): ... print a,b,x,y ... Reference O'Reilly - Core-Python Where as this function make use of the default arguments syntactically correct for above function calls. Keyword arguments calling prove useful for being a...
https://stackoverflow.com/ques... 

adding directory to sys.path /PYTHONPATH

... This is working as documented. Any paths specified in PYTHONPATH are documented as normally coming after the working directory but before the standard interpreter-supplied paths. sys.path.append() appends to the existing path. See here and here. If you want a particular direc...
https://stackoverflow.com/ques... 

What would be C++ limitations compared C language? [closed]

...tive C' and 'call the Java java.util.Queue class using JNI' or 'call the CPython library' - Objective C actually is a proper superset of C (including C99), and Java and CPython libraries both are callable directly from C without having to port unrelated code to the C++ language. Of course you cou...
https://stackoverflow.com/ques... 

What is the difference between statically typed and dynamically typed languages?

... a statically-typed language with type inference). Examples: Perl, Ruby, Python, PHP, JavaScript Most scripting languages have this feature as there is no compiler to do static type-checking anyway, but you may find yourself searching for a bug that is due to the interpreter misinterpreting the t...
https://www.tsingfun.com/it/tech/917.html 

C# 能否获取一个对象所占内存的大小? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...个对象所占内存的大小?今日,在项目重构的时候忽然想一个问题,一个类哪些成员的增加,会影响一个类所占内存的大小?C#有没有办法知道一个对象占多少内存呢? ...今日,在项目重构的时候忽然想一个问题,一个类哪...
https://stackoverflow.com/ques... 

urllib2.HTTPError: HTTP Error 403: Forbidden

I am trying to automate download of historic stock data using python. The URL I am trying to open responds with a CSV file, but I am unable to open using urllib2. I have tried changing user agent as specified in few questions earlier, I even tried to accept response cookies, with no luck. Can you pl...
https://stackoverflow.com/ques... 

How do I compare version numbers in Python?

... PEP 440 versions as “not strict” and therefore doesn’t match modern Python’s notion of what a valid version is. As distutils.version is undocumented, here's the relevant docstrings. share | ...
https://stackoverflow.com/ques... 

Replace all non-alphanumeric characters in a string

... same but allows the underscore as a word character (don't know why): docs.python.org/3.6/library/re.html#index-32 – JHS Dec 23 '18 at 1:32 ...
https://stackoverflow.com/ques... 

What is the difference between YAML and JSON?

... YAML can allow an attacker to execute arbitrary code. Observations: Python programmers are generally big fans of YAML, because of the use of indentation, rather than bracketed syntax, to indicate levels. Many programmers consider the attachment of "meaning" to indentation a poor choice. If...