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You can use the types module:

>>> import types
>>> var = 1
>>> NumberTypes = (types.IntType, types.LongType, types.FloatType, types.ComplexType)
>>> isinstance(var, NumberTypes)
True

Note the use of a tuple to test against multiple types.

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# http://stackoverflow.com/questions/23921986/web-scraping-without-knowledge-of-page-structure
_Author = Farsheed Ashouri
import os
import sys
import re
## Spider libraries
from scrapy.spider import BaseSpider
from scrapy.selector import Selector
from main.items import MainItem
from scrapy.http import Request

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from pyquery import PyQuery as pq
from urllib import urlencode

for page in range(2):
    params = urlencode({'filters':'video', 'page':page, 'search_query': 'la guerra del opio'})
    jq = pq(url="http://www.youtube.com/results?%s" % params,
            headers={"user-agent": "Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20140129 Firefox/24.0"})
    jq.make_links_absolute("http://www.youtube.com")
    for video in jq("ol.item-section").children().items():
        url = video.find("a.yt-uix-tile-link").attr("href")

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import pafy

# code at : https://github.com/np1/pafy
# you must copy pafy.py in your project directory

# show info about youtube video 
url = "https://www.youtube.com/watch?v=oIlIVFBBbNw"
video = pafy.new(url)
print video.title
print video.duration

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"""
    Tkinter: listbox + scrollbar example
"""

#!/usr/bin/env python 
# -*- coding: cp1252 -*-
import Tkinter as tk

class Application(tk.Frame): 
    def __init__(self, master=None):

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"""
atexit.register example

The atexit module defines a single function to register cleanup functions. 
Functions thus registered are automatically executed upon normal interpreter termination

https://docs.python.org/2/library/atexit.html
"""

# Caution: If you work with IDLE this example doesn't work

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"""
*args and **kwargs in Python (variable length argument lists in Python)

Especificar que una función puede ser llamada con un número arbitrario de argumentos. 
Estos argumentos serán organizados en una lista o diccionario. Antes del número 
variable de argumentos, cero o más argumentos normales pueden estar presentes

http://www.saltycrane.com/blog/2008/01/how-to-use-args-and-kwargs-in-python/
"""

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"""
  Python simple decorator example with function
"""

import functools

def function_wrapper(wrapped): # function closure
    @functools.wraps(wrapped)
    def _wrapper(*args, **kwargs):
        print "enter wrapper"

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"""
Python @decorator to create decorator

http://librosweb.es/eventos/pycon-2014/como-crear-decorators-avanzados-en-las-aplicaciones-python/
"""

import functools

class object_proxy(object):
    def __init__(self, wrapped):

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"""
Timer example
"""
from threading import Timer
def hello():
    print "hello, world"

#test
t = Timer(5.0, hello)
t.start() # after 5 seconds, "hello, world" will be printed