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How to convert Nonetype to int or string?
... of their presence (which is totally acceptable behavior), you may need to convert None to 0 (see kindall answer)
– spider
Nov 28 '13 at 17:02
...
How can I use a DLL file from Python?
... easiest way I've found for doing what you ask.
import ctypes
# Load DLL into memory.
hllDll = ctypes.WinDLL ("c:\\PComm\\ehlapi32.dll")
# Set up prototype and parameters for the desired function call.
# HLLAPI
hllApiProto = ctypes.WINFUNCTYPE (
ctypes.c_int, # Return type.
ctypes....
Android Bitmap to Base64 String
How do I convert a large Bitmap (photo taken with the phone's camera) to a Base64 String?
7 Answers
...
ValueError: invalid literal for int() with base 10: ''
...epresentation of a float to an int, as @katyhuff points out above, you can convert to a float first, then to an integer:
>>> int('5')
5
>>> float('5.0')
5.0
>>> float('5')
5.0
>>> int(5.0)
5
>>> float(5)
5.0
>>> int('5.0')
Traceback (most recent...
Cannot drop database because it is currently in use
...E'
DECLARE @SQL varchar(max)
SELECT @SQL = COALESCE(@SQL,'') + 'Kill ' + Convert(varchar, SPId) + ';'
FROM MASTER..SysProcesses
WHERE DBId = DB_ID(@DatabaseName) AND SPId <> @@SPId
--SELECT @SQL
EXEC(@SQL)
share
...
Python way of printing: with 'format' or percent form? [duplicate]
...verflow.com/a/3228928/174728. It also lets you do key/index lookups import sys;"{[version]}".format(vars(sys))
– John La Rooy
Dec 7 '14 at 22:24
2
...
libpng warning: iCCP: known incorrect sRGB profile
...ou can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick:
mogrify *.png
This requires that your ImageMagick was built with libpng16. ...
Change R default library path using .libPaths in Rprofile.site fails to work
...brary why not append the new library (which must already exist in your filesystem) to the existing library path?
.libPaths( c( .libPaths(), "~/userLibrary") )
Or (and this will make the userLibrary the first place to put new packages):
.libPaths( c( "~/userLibrary" , .libPaths() ) )
Then I ge...
print call stack in C or C++
...cktrace(3) that simply returns an array of void * (in fact each of these point to the return address from the corresponding stack frame). To translate these to something of use, there's backtrace_symbols(3).
Pay attention to the notes section in backtrace(3):
The symbol names may be unavailable...
Pure JavaScript Send POST Data Without a Form
...
The [new-ish at the time of writing in 2017] Fetch API is intended to make GET requests easy, but it is able to POST as well.
let data = {element: "barium"};
fetch("/post/data/here", {
method: "POST",
body: JSON.stringify(data)
}).then(res => {
console.log("Request compl...