Python Lesson Six | Python Fiddle

#defines a variable as a string containing a format character, and the substitution for that character:
x = "There are %d types of people" % 10

#defines a variable as a string:
binary = "binary"

#defines another variable as a different string:
do_not = "don't"

#defines one more variable as a string with two format characters, 
#substituted with a list (containing previously defined variables):
y = "Those who know %s and those who %s" % (binary, do_not)

#prints the two previously defined complicated string variables:
print x
print y

#reprints the above statements using two different format characters:
print "I said: %r." % x
print "I also said: '%s'." % y

#defines a variable using a logical value:
hilarious = False

#defines another variable using a string and a format character, but no substitute (yet):
joke_evaluation = "Isn't that joke so funny?! %r"

#prints one string variable, substituting in the other:
print joke_evaluation % hilarious

#defines two separate strings:
w = "This is the left side of..."
e = "a string with a right side."

#prints the two strings, conjoined (with no spaces added):
print w + e

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