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# To start using reinteract, type a Python expression, and hit
# <Control>Return to calculate. (This example is already calculated
# when it was loaded, but try modifying the statement below and
# then hit <Control>Return again to calculate it)
1 + 1
# You can assign and use variables
a = 2
a
a + 3
# As above, the default action when an expression returns a result
# other than N is to display it. You can also use 'print' explicitly
print "Hello", "World"
# Try modifying the value of a; you'll see that when you hit
# control-return, the value of a + 3 is updated as well.
# You can define functions
def fact(n):
result = 1
for i in xrange(0,n):
result *= (1 + i)
return result
fact(3)
# And use constructs like for loops and if statements
for i in xrange(0,5):
print "%d: %d" % (i + 1, fact(i + 1))
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