Leif Ulstrup leifulstrup

hrbrmstr / badmail.Rmd

Last active December 1, 2016 07:59

Code for this post:

	---
	title: "Visualizing the Clinton Email Network in R"
	author: "hrbrmstr"
	date: "`r Sys.Date()`"
	output: html_document
	---
	```{r include=FALSE}
	knitr::opts_chunk$set(
	collapse=TRUE,
	comment="#>",

dehowell / gist:884204

Created March 23, 2011 22:49

Python function to test if a file at a URL exists.

	import urllib2

	def file_exists(location):
	request = urllib2.Request(location)
	request.get_method = lambda : 'HEAD'
	try:
	response = urllib2.urlopen(request)
	return True
	except urllib2.HTTPError:
	return False