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Strings as Primary Keys in SQL Database [closed]
... a primary key is that because the index is constantly put into sequential order, when a new key is created that would be in the middle of the order the index has to be resequenced... if you use an auto number integer, the new key is just added to the end of the index.
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How can I change the default Django date template format?
...
In order to change date format in the views.py and then assign it to template.
# get the object details
home = Home.objects.get(home_id=homeid)
# get the start date
_startDate = home.home_startdate.strftime('%m/%d/%Y')
# ass...
Python: changing value in a tuple
...e in the comments, tuples are immutable, you need to create a new tuple in order to achieve this. For instance:
>>> tpl = ('275', '54000', '0.0', '5000.0', '0.0')
>>> change_value = 200
>>> tpl = (change_value,) + tpl[1:]
>>> tpl
(200, '54000', '0.0', '5000.0', '...
libpng warning: iCCP: known incorrect sRGB profile
...the Qt Library.
Example
Here is a minimal example I have written in C++ in order to demonstrate how to implement the proposed solution:
QPixmap pixmap;
pixmap.load("badProfileImage.png");
QFile file("goodProfileImage.png");
file.open(QIODevice::WriteOnly);
pixmap.save(&file, "PNG");
The comple...
append new row to old csv file python
...e to append a new row opening the file in 'a'mode.
Even in windows, in order to avoid the newline problem, you must declare it as newline=''.
Now you can open the file in 'a'mode (without the b).
import csv
with open(r'names.csv', 'a', newline='') as csvfile:
fieldnames = ['This','aN...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...e special characters & | < or >, split the line at this point in order to handle pipes, command concatenation, and redirection.
In the case of a pipe (|), each side is a separate command (or command block) that gets special handling in phase 5.3
In the case of &, &&, or || co...
Change Bootstrap input focus blue glow
...e="tel"]:focus,
input[type="color"]:focus,
.uneditable-input:focus {
border-color: rgba(126, 239, 104, 0.8);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.075) inset, 0 0 8px rgba(126, 239, 104, 0.6);
outline: 0 none;
}
sh...
How to search file text for a pattern and replace it with a given value
...irectory fails.
You must have enough space on the destination partition in order to hold both the complete old file and the new file. However, if you have insufficient space to hold both copies then you are probably short on disk space and the actual risk of writing a truncated file is much higher,...
Tool to convert Python code to be PEP8 compliant
...le Article on RealPython https://realpython.com/python-pep8/
Linters (in order of popularity):
mypy https://github.com/python/mypy linter for type checks
(PEP-484)
pycodestyle https://github.com/PyCQA/pycodestyle - good one using
PEP-8, very popular. Often used alongside of pylint and flake8 (si...
How to print the ld(linker) search path
What is the way to print the search paths that in looked by ld in the order it searches.
6 Answers
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