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Label encoding across multiple columns in scikit-learn
...fantastic replies)
However, for the purpose of a few classification tasks etc. you could use
pandas.get_dummies(input_df)
this can input dataframe with categorical data and return a dataframe with binary values. variable values are encoded into column names in the resulting dataframe. more
...
Can someone explain Microsoft Unity?
...the IMyService, you can't unit test it easily, you can't change it easily, etc.)
With an IoC container you "configure" the container to resolve those dependencies for you. So with a constructor-based injection scheme, you just pass the interface to the IMyService dependency into the constructor. Wh...
Print a list in reverse order with range()?
...ge(10), not range(9). Also, if you want a fully-formed list (for slicing, etc.), you should do list(reversed(range(10))).
– John Y
Sep 2 '11 at 16:49
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XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP
...get back to the C:\ Root directory - type cd/
type cd Drive:\Folder\Folder\etc to get to the folder where your .Html file is (or php, etc)
Check the path. type: path at the command prompt. You must see the path to the folder where python is located. For example, if python is in C:\Python27, then...
How do you validate a URL with a regular expression in Python?
...+ '-.') # and others?
assert pieces.scheme in ['http', 'https', 'ftp'] # etc.
It might be slower, and maybe you'll miss conditions, but it seems (to me) a lot easier to read and debug than a regular expression for URLs.
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Java and SQLite [closed]
...Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:test.db");
Statement stat = conn.createStatement();
stat.executeUpdate("drop table if exists people;");
stat.executeUpdate("create table people (name, occupation);");
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Relative paths in Python
...e on my system (python 2.5.1 on OS X 10.5.7):
#foo.py
import os
print os.getcwd()
print __file__
#in the interactive interpreter
>>> import foo
/Users/jason
foo.py
#and finally, at the shell:
~ % python foo.py
/Users/jason
foo.py
However, I do know that there are some quirks with __fil...
In Python, when should I use a function instead of a method?
...bject like a person.
Attributes are the person's name, height, shoe size, etc.
Methods and functions are operations that the person can perform.
If the operation could be done by just any ol' person, without requiring anything unique to this one specific person (and without changing anything on t...
Why split the tag when writing it with document.write()?
...to detect protocol - protocol-less URI works just fine ('//foo.com/bar.js' etc)
– dmp
Jul 15 '16 at 12:35
3
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JavaScript and Threads
...ecs" no need to hack javascript anymore with setTimeout(), setInterval(), etc.
HTML5 & Friends introduces the javascript Web Workers specification. It is an API for running scripts asynchronously and independently.
Links to the specification and a tutorial.
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