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Reimport a module in python while interactive
... object, so it must have been successfully imported before. This is useful if you have edited the module source file using an external editor and want to try out the new version without leaving the Python interpreter.
If running Python 3.4 and up, do import importlib, then do importlib.reload(name...
How do I get a list of column names from a psycopg2 cursor?
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If you just want the column names, don't select all of the rows in the table. This is more efficient: curs.execute("SELECT * FROM people LIMIT 0")
– Demitri
Sep 6 '12 at 22:03
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Undocumented NSURLErrorDomain error codes (-1001, -1003 and -1004) using StoreKit
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These constants don't compile in Swift, but e.g. NSURLErrorUnknown does. Any clues?
– Nicolas Miari
Sep 17 '15 at 4:41
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How do I get an object's unqualified (short) class name?
... the class of an object within the PHP name spaced environment without specifying the full namespaced class.
22 Answers
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Replace multiple characters in one replace call
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You could also use a character class:
str.replace(/[#_]/g,'');
Fiddle
If you want to replace the hash with one thing and the underscore with another, then you will just have to chain. However, you could add a prototype:
String.prototype.allReplace = function(obj) {
var retStr = this;
f...
Is it ok to use dashes in Python files when trying to import them?
...ave short, all-lowercase names. Underscores can be used in the module name if it improves readability. Python packages should also have short, all-lowercase names, although the use of underscores is discouraged.
Since module names are mapped to file names, and some file systems are case insensitive ...
Arduino 101 实验11 - RGB LCD 显示屏，把手机的字显示到硬件上 · App Inventor 2 中文网
...1 步：把文字写到屏上
when 按钮_显示.Click() {
if isEmpty(文本输入框_内容.Text) {
标签_状态.Text = "请先输入内容"
} else {
Arduino101RgbLcd1.SetText(文本输入框_内容.Text)
标签_状态.Text = "已发送"
}
}
中途验证：输入 ...
Parsing a string into a boolean value in PHP
... This function works flawlessly, thank you! But your links are now 404.
– servermanfail
Dec 21 '18 at 6:27
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scheduleAtFixedRate vs scheduleWithFixedDelay
... executor.shutdown()
} else {
Thread.sleep(2000L)
val now = System.currentTimeMillis()
time += now - start
System.out.println("Total $time delay ${now - start}\n")
start = now
}
}, 0L, 1000L, TimeUnit.MILLISECONDS)
And see the results:
| scheduleWi...
How to convert list of tuples to multiple lists?
...>> zip(*[(1, 2), (3, 4), (5, 6)])
[(1, 3, 5), (2, 4, 6)]
The only difference is that you get tuples instead of lists. You can convert them to lists using
map(list, zip(*[(1, 2), (3, 4), (5, 6)]))
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