# altERnaTIng cAsE <=> ALTerNAtiNG CaSe
# altERnaTIng cAsE <=> ALTerNAtiNG CaSe
# Define String.prototype.toAlternatingCase (or a similar function/method such
# as to_alternating_case/toAlternatingCase/ToAlternatingCase in your selected
# language; see the initial solution for details) such that each lowercase
# letter becomes uppercase and each uppercase letter becomes lowercase. For
# example:
#
# "hello world".toAlternatingCase() === "HELLO WORLD"
# "HELLO WORLD".toAlternatingCase() === "hello world"
# "hello WORLD".toAlternatingCase() === "HELLO world"
# "HeLLo WoRLD".toAlternatingCase() === "hEllO wOrld"
# "12345".toAlternatingCase() === "12345" // Non-alphabetical characters are
# unaffected
# "1a2b3c4d5e".toAlternatingCase() === "1A2B3C4D5E"
# "String.prototype.toAlternatingCase".toAlternatingCase() ===
# "sTRING.PROTOTYPE.TOaLTERNATINGcASE"
# As usual, your function/method should be pure, i.e. it should not mutate the
# original string.

def to_alternating_case(string):
    return string.swapcase()

9117296eaa46cb9e59b7b7bfc5a0f66de62c22f9
<mask token>

def to_alternating_case(string):
    return string.swapcase()

# altERnaTIng cAsE <=> ALTerNAtiNG CaSe
# altERnaTIng cAsE <=> ALTerNAtiNG CaSe
# Define String.prototype.toAlternatingCase (or a similar function/method such
# as to_alternating_case/toAlternatingCase/ToAlternatingCase in your selected
# language; see the initial solution for details) such that each lowercase
# letter becomes uppercase and each uppercase letter becomes lowercase. For
# example:
#
# "hello world".toAlternatingCase() === "HELLO WORLD"
# "HELLO WORLD".toAlternatingCase() === "hello world"
# "hello WORLD".toAlternatingCase() === "HELLO world"
# "HeLLo WoRLD".toAlternatingCase() === "hEllO wOrld"
# "12345".toAlternatingCase() === "12345" // Non-alphabetical characters are
# unaffected
# "1a2b3c4d5e".toAlternatingCase() === "1A2B3C4D5E"
# "String.prototype.toAlternatingCase".toAlternatingCase() ===
# "sTRING.PROTOTYPE.TOaLTERNATINGcASE"
# As usual, your function/method should be pure, i.e. it should not mutate the
# original string.

def to_alternating_case(string):
    return string.swapcase()
