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ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
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in the terminal on mac and linux. I believe it is the same in windows CMD but I am not certain.
– Henry
Feb 7 '18 at 20:45
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How to find out where a function is defined?
... doing so (I would recomend Eclipse PDT), or you can allways grep it if on Linux, or using wingrep. In Linux it would be something like:
grep -R "function funName" *
from within the root folder of the project.
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What's so great about Lisp? [closed]
...You could in theory embed any language into Lisp like Rust, Ruby, C, Java, Python, Erlang. So the s-expression version of Python (Hy) and the of Rust is called (Risp) [although I don't know how stable these are]. If you write code in Hy instead of Python you have the ability of macros and structur...
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
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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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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
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Apache两种工作模式区别及配置切换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Apache两种工作模式区别及配置切换1、Redhat Linux下查看apache版本号在Apache安装目录bin下，使用以下命令查看即可。使用命令：. httpd -v示例：2、查看Apache当前工作模...1、Redhat Linux下查看apache版本号
在Apache安装目录bin下，使用以下...
Set Django IntegerField by choices=… name
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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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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...
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
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