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 Ian Ozsvald
I am the co-founder of ShowMeDo (see http://showmedo.com/about), author of `The Screencasting Handbook <http://thescreencastinghandbook.com>`_ and the founder of the professional screencast production company `ProCasts <http://procasts.co.uk>`_:
.. image:: http://procasts.co.uk/media/procasts_sma ...
 Ian Ozsvald
I am the co-founder of ShowMeDo (see http://showmedo.com/about), author of `The Screencasting Handbook <http://thescreencastinghandbook.com>`_ and the founder of the professional screencast production ...
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Learn how the 'if' statement works in Python. In this episode we experiment with some simple logic tests using numbers and strings on True conditions.
In the next episode we look at what happens if our condition is False using 'else' and 'elif'.
Using: Python 2.5 on Windows, applies cross-platform
# 2009-01-19 using Python 2.5
# The 'if' statement for Logic in Python
# Background: http://en.wikipedia.org/wiki/If-then-else
# Indentend blocks:
# Evaluating Boolean conditions
print "Please enter a number e.g. 22:",
n = int(raw_input())
# test for equality
if n == 22:
print "n is 22!"
print "This is the indented block"
# test for greater-than (and less-than)
#if n > 22: # also try <
# print "n is greater than 22"
# test not-equals-to
#if n != 22:
# print "n is NOT 22"
# single-equals is illegal, this will generate
# "SyntaxError: invalid syntax"
#if n = 40:
# print "this syntax is legal in C!"
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