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s = "alphaBETA"
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print s.upper() # => "ALPHABETA"
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print s.lower() # => "alphabeta"
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print s.swapcase() # => "ALPHAbeta"
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print "fOo bAR".capitalize() # => "Foo bar"
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print "fOo bAR".title() # => "Foo Bar"
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import string
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print string.capwords("fOo bAR") # => "Foo Bar"
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