大约有 43,000 项符合查询结果(耗时:0.0549秒) [XML]

https://stackoverflow.com/ques... 

How do I find the location of my Python site-packages directory?

...ysconfig module instead: python3 -c 'import sysconfig; print(sysconfig.get_paths()["purelib"])' The per user site-packages directory (PEP 370) is where Python installs your local packages: python -m site --user-site If this points to a non-existing directory check the exit status of Python and ...
https://stackoverflow.com/ques... 

Pass variables to Ruby script via command line

... opts.on('-n', '--sourcename NAME', 'Source name') { |v| options[:source_name] = v } opts.on('-h', '--sourcehost HOST', 'Source host') { |v| options[:source_host] = v } opts.on('-p', '--sourceport PORT', 'Source port') { |v| options[:source_port] = v } end.parse! dest_options = YAML.load_fi...
https://stackoverflow.com/ques... 

Can we define implicit conversions of enums in c#?

...rmined from reflection /// </summary> private string _name; /// <summary> /// The DescriptionAttribute, if any, linked to the declaring field /// </summary> private DescriptionAttribute _descriptionAttribute; /// <summary...
https://stackoverflow.com/ques... 

How to parse/read a YAML file into a Python object? [duplicate]

...e looks like this: import yaml with open('tree.yaml') as f: # use safe_load instead load dataMap = yaml.safe_load(f) The variable dataMap now contains a dictionary with the tree data. If you print dataMap using PrettyPrint, you will get something like: {'treeroot': {'branch1': {'branch1-...
https://stackoverflow.com/ques... 

Real world example about how to use property feature in python?

...changing terms. Complex calculation hidden behind an attribute: class PDB_Calculator(object): ... @property def protein_folding_angle(self): # number crunching, remote server calls, etc # all results in an angle set in 'some_angle' # It could also reference a ca...
https://stackoverflow.com/ques... 

Aren't Python strings immutable? Then why does a + “ ” + b work?

... Consider: >>> a='asdf' >>> a.__repr__ <method-wrapper '__repr__' of str object at 0x1091aab90> >>> a='asdf' >>> a.__repr__ <method-wrapper '__repr__' of str object at 0x1091aab90> >>> a='qwer' >>> a.__repr_...
https://stackoverflow.com/ques... 

How to find out if you're using HTTPS without $_SERVER['HTTPS']

I've seen many tutorials online that says you need to check $_SERVER['HTTPS'] if the server is connection is secured with HTTPS. My problem is that on some of the servers I use, $_SERVER['HTTPS'] is an undefined variable that results in an error. Is there another variable I can check that should...
https://stackoverflow.com/ques... 

Removing duplicate objects with Underscore for Javascript

...t = [{a:1,b:5},{a:1,c:5},{a:2},{a:3},{a:4},{a:3},{a:2}]; var uniqueList = _.uniq(list, function(item, key, a) { return item.a; }); // uniqueList = [Object {a=1, b=5}, Object {a=2}, Object {a=3}, Object {a=4}] Notes: Callback return value used for comparison First comparison object with un...
https://stackoverflow.com/ques... 

What are the differences between the threading and multiprocessing modules?

...nd a thread pool like this: with concurrent.futures.ThreadPoolExecutor(max_workers=4) as executor: executor.submit(job, argument) executor.map(some_function, collection_of_independent_things) # ... You can even get the results of those jobs and pass them on to further jobs, wait for t...
https://stackoverflow.com/ques... 

One-liner to check whether an iterator yields at least one element?

...In case the iterator yields something false-ish you can write any(True for _ in iterator). share | improve this answer | follow | ...