大约有 16,000 项符合查询结果（耗时：0.0156秒） [XML]
Why does “pip install” inside Python raise a SyntaxError?
...erpreter. By opening pip.exe with 7-zip you can see main.py importing pip, sys and re modules... (And there you'll find the answer how to run it within a python shell)--> pip is a regular python module. Don't forget windows wasn't first platform supporting python, linux was, and there python is a...
python NameError: global name '__file__' is not defined
...he "execution path", not the "actual file path":
print(os.getcwd())
print(sys.argv[0])
print(os.path.dirname(os.path.realpath('__file__')))
Source:
http://cx-freeze.readthedocs.org/en/latest/faq.html
Your old line (initial question):
def read(*rnames):
return open(os.path.join(os.path.dirname(_...
Generic TryParse
...
You should use the TypeDescriptor class:
public static T Convert<T>(this string input)
{
try
{
var converter = TypeDescriptor.GetConverter(typeof(T));
if(converter != null)
{
// Cast ConvertFromString(string text) : object to (T)
...
Python CSV error: line contains NULL byte
...
Converting the encoding of the source file from UTF-16 to UTF-8 solve my problem.
How to convert a file to utf-8 in Python?
import codecs
BLOCKSIZE = 1048576 # or some other, desired size in bytes
with codecs.open(sourceFil...
What is __init__.py for?
...y file (with underscores) and datetime.py. Now open an interpreter, import sys, and issue sys.path.insert(0, '/path/to/datetime'), replacing that path with the path to whatever directory you just made. Now try something like from datetime import datetime;datetime.now(). You should get an AttributeEr...
How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...erflow, but it'll mask larger numbers, which might cause trouble if you're converting a table. Personally I'd rather have the query error out up front and know that some of my "integers" are screwy (You can also select with E'\\d{6,}$' first to make sure).
– Anthony Briggs
...
Convert a byte array to integer in Java and vice versa
...LeifEricson I believe the & 0xFFs are necessary as it tells the JVM to convert the signed byte into an integer with just those bits set. Otherwise the byte -1 (0xFF) will turn into the int -1 (0xFFFFFFFF). I could be wrong and even if I am it doesn't hurt and makes things clearer.
...
How do I convert a String to an int in Java?
How can I convert a String to an int in Java?
46 Answers
46
...
How to calculate dp from pixels in android programmatically [duplicate]
...t the OP asked for.
Note that TypedValue.applyDimension cannot be used to convert px->dp, for that you must use the method described here: https://stackoverflow.com/a/17880012/504611 (quoted below for convenience).
Without Context object, elegant static methods:
public static int dpToPx(int...
How to check if a stored procedure exists before creating it
... to run a query.
Just copy everything after AS:
BEGIN
DECLARE @myvar INT
SELECT *
FROM mytable
WHERE @myvar ...
END
This code does exactly same things a stored proc would do, but is not stored on the database side.
That's much like what is called anonymous procedure in PL/...