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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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I came up with a way using a list comprehension: df[[(len(x) < 2) for x in df['column name']]] but yours is much nicer. Thanks for your help!
– sjs
Dec 13 '12 at 4:17
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OS X: equivalent of Linux's wget
How can I do an HTTP GET from a Un*x shell script on a stock OS X system? (installing third-party software is not an option, for this has to run on a lot of different systems which I don't have control on).
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Split a string by spaces — preserving quoted substrings — in Python
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You want split, from the built-in shlex module.
>>> import shlex
>>> shlex.split('this is "a test"')
['this', 'is', 'a test']
This should do exactly what you want.
sh...
Python super() raises TypeError
... reason is that super() only operates on new-style classes, which in the 2.x series means extending from object:
>>> class X(object):
def a(self):
print 'a'
>>> class Y(X):
def a(self):
super(Y, self).a()
print 'b'
>>>...
Assign variable in if condition statement, good practice or not? [closed]
...e you try to compare values, but use a single = instead of == or ===. For example, when you see this:
if (value = someFunction()) {
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}
you don't know if that's what they meant to do, or if they intended to write this:
if (value == someFunction()) {
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}
If you really want to do the...
Is the C# static constructor thread safe?
...ngleton
{
private static Singleton instance;
// Added a static mutex for synchronising use of instance.
private static System.Threading.Mutex mutex;
private Singleton() { }
static Singleton()
{
instance = new Singleton();
mutex = new System.Threading.Mutex();
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Is there an equivalent of 'which' on the Windows command line?
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Windows Server 2003 and later (i.e. anything after Windows XP 32 bit) provide the where.exe program which does some of what which does, though it matches all types of files, not just executable commands. (It does not match built-in shell commands like cd.) It will even accept wildc...
How do I determine file encoding in OS X?
I'm trying to enter some UTF-8 characters into a LaTeX file in TextMate (which says its default encoding is UTF-8), but LaTeX doesn't seem to understand them.
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
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Let's get one thing out of the way first. The explanation that yield from g is equivalent to for v in g: yield v does not even begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warr...
How do I delete a Git branch locally and remotely?
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