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django syncdb and an updated model
...e recently updated my model, added a BooleanField to it however when I do python manage.py syncdb , it doesn't add the new field to the database for the model. How can I fix this ?
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
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A one-liner for python:
python -c "import random, sys; lines = open(sys.argv[1]).readlines(); random.shuffle(lines); print ''.join(lines)," myFile
And for printing just a single random line:
python -c "import random, sys; print random.ch...
How to get a function name as a string?
In Python, how do I get a function name as a string, without calling the function?
12 Answers
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C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...返回单个节点可使用SelectSingleNode方法，该方法如果查询到一个或多个节点，返回第一个节点；如果没有查询的任何节点返回 Nothing。例如：
objNode = objNode.SelectSingleNode("/Company/Department/Employees/Employee")
if (objNode == null)
// - Do p...
财务计算器拓展：复利计算、平均值、中位数、众数、方差计算 - App Invento...
...此扩展让您能够执行广泛的财务计算，从简单利息和复利到净现值和投资回报率。它还使您能够进行基本的统计计算，包括计算平均值、中位数、众数、方差等。无论您是在创建个人财务应用程序还是数据分析工具，此扩展都是...
How to list imported modules?
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If you want to do this from outside the script:
Python 2
from modulefinder import ModuleFinder
finder = ModuleFinder()
finder.run_script("myscript.py")
for name, mod in finder.modules.iteritems():
print name
Python 3
from modulefinder import ModuleFinder
finder = M...
How to sort mongodb with pymongo
...ere is a link to the documentation on sorting with pymongo api.mongodb.org/python/current/api/pymongo/…
– Shane Reustle
Jan 21 '15 at 6:24
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Why does `a == b or c or d` always evaluate to True?
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In many cases, Python looks and behaves like natural English, but this is one case where that abstraction fails. People can use context clues to determine that "Jon" and "Inbar" are objects joined to the verb "equals", but the Python interp...
React JSX: selecting “selected” on selected option
...yles.css";
export default function App() {
const options = [
"Monty Python and the Holy Grail",
"Monty Python's Life of Brian",
"Monty Python's The Meaning of Life"
];
const filmsByTati = [
{
id: 1,
title: "Jour de fête",
releasedYear: 1949
},
{
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Getting a list of values from a list of dicts
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This "magic" is known as list comprehension docs.python.org/3/tutorial/…
– William Ardila
Mar 22 at 2:58
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