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How to step through Python code to help debug issues?
.... From Within Your Program
For a big project and long-running module, can start the debugging from inside the program using
import pdb and set_trace()
like this :
#!/usr/bin/env python
# encoding: utf-8
#
import pdb
class MyObj(object):
count = 5
def __init__(self):
self.count= ...
“ImportError: No module named” when trying to run Python script
...y found in your sys.path, but also on your current working directory. When starting an interpreter from the command line, the current directory you're operating in is the same one you started ipython in. If you run
import os
os.getcwd()
you'll see this is true.
However, let's say you're using a...
Printing object properties in Powershell
...---------
Recycle CodeMethod void Recycle()
Start CodeMethod void Start()
Stop CodeMethod void Stop()
applicationPoolSid CodeProperty Microsoft.IIs.PowerShell.Framework.CodeProperty
st...
What is “String args[]”? parameter in main method Java
...
args indexing start at 0. (contrary to C giving you the name of the program)
– AdrieanKhisbe
Mar 21 '14 at 10:48
1
...
How to retrieve POST query parameters?
...
Things have changed once again starting Express 4.16.0, you can now use express.json() and express.urlencoded() just like in Express 3.0.
This was different starting Express 4.0 to 4.15:
$ npm install --save body-parser
and then:
var bodyParser = requ...
What happened to console.log in IE8?
...ode. What if msg is an object? Walter's answer makes much more sense, as a starting point.
– Precastic
Jun 22 '13 at 10:47
7
...
How to insert an item into an array at a specific index (JavaScript)?
...frequently does not. For example: arr.splice(2,3) will remove 3 elements starting at index 2. Without passing the 3rd....Nth parameters nothing is inserted. So the name insert() doesn't do it justice either.
– EBarr
May 13 '14 at 1:45
...
What regular expression will match valid international phone numbers?
...
This is not valid. European phone numbers can start with a double 0 without a + in the beginning. Thus a phone number such as: +44 8984 1234 (UK) is also perfectly valid if written 0044 8984 1234 which this regexp (and on other answers as well) does not support.
...
What is a NullPointerException, and how do I fix it?
...eption. eg when checking an input string with a constant string you should start with the constant string like here: if ("SomeString".equals(inputString)) {} //even if inputString is null no exception is thrown. So there are a bunch of things that you can do to try to be safe.
–...
How to add a progress bar to a shell script?
...%)\r'
echo -ne '\n'
In a comment below, puk mentions this "fails" if you start with a long line and then want to write a short line: In this case, you'll need to overwrite the length of the long line (e.g., with spaces).
s...