Python and Ruby error-handling examples call algo twice

[peckjon]

https://algorithmia.com/developers/clients/python/ the following error-handling example:

algo = client.algo('nlp/Summarizer/0.1.3')
# Pass in input required by algorithm
try:
	# Get the summary result of your file's contents.
	response = algo.pipe(input).result
	print(response)
except:
	# Algorithm error if the input is not correctly formatted.
	print(algo.pipe(input).error.message)

This causes the Algo to be called a second time in the error flow. Refine.

Same for Ruby.