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Detect if a NumPy array contains at least one non-numeric value?
... Why doesn't something like float('nan') in x not work? I tried it and python returns False where x = [1,2,3,float('nan')].
– Charlie Parker
Oct 13 '16 at 22:02
1
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Set Django IntegerField by choices=… name
...es
super(models.IntegerField, self).__init__(**kwargs)
def to_python(self, value):
return self.val2choice[value]
def get_db_prep_value(self, choice):
return self.choice2val[choice]
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How to extract the decision rules from scikit-learn decision-tree?
...at(indent, tree_.value[node])
recurse(0, 1)
This prints out a valid Python function. Here's an example output for a tree that is trying to return its input, a number between 0 and 10.
def tree(f0):
if f0 <= 6.0:
if f0 <= 1.5:
return [[ 0.]]
else: # if f0 > 1.5
...
Why doesn't Objective-C support private methods?
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More python being "obj-c-ic" :). Guido was quite proactive in maintaining Python on NeXT systems, including creating the 1st version of PyObjC. Thus, ObjC did influence python somewhat.
– bbum
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How can I generate a diff for a single file between two branches in github
...Chrome browsers: https://chrome.google.com/webstore/detail/diff-tools-text-pdf-doc-o/lkcdojpmjehlniamnglpjlldkoonlomb
Open Diff Tools ( http://iblogbox.com/devtools/diff/ )
From GitHub go to the BEFORE commit, tag, or branch, open the file, then click on the Raw button to get the raw file view, se...
What is the 'dynamic' type in C# 4.0 used for?
...is being able to reuse variables for different types of data. I'm sure the Python, Ruby, and Perl programmers out there can think of a million ways to take advantage of this, but I've been using C# so long that it just feels "wrong" to me.
dynamic foo = 123;
foo = "bar";
OK, so you most likely wi...
Regex: match everything but specific pattern
...ny languages, use \A to define the unambiguous start of string, and \z (in Python, it is \Z, in JavaScript, $ is OK) to define the very end of the string.
Dot note: In many flavors (but not POSIX, TRE, TCL), . matches any char but a newline char. Make sure you use a corresponding DOTALL modifier (/s...
Extracting text OpenCV
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Hi, how do i achieve the same outcome with python cv2?
– dnth
Oct 28 '15 at 9:19
3
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How to make a cross-module variable?
... these answers. Also note that __builtin__ has been renamed to builtins in python3.
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Generate a random date between two other dates
...e timestamp back to date string and you have a random time in that range.
Python example (output is almost in the format you specified, other than 0 padding - blame the American time format conventions):
import random
import time
def str_time_prop(start, end, format, prop):
"""Get a time at a...