#  string splitting and joining.

s = "a dog, two dogs and a    cat."
print(f"s: {s}")
print(f"s.split():{s.split()}")
print("The delimiter is not in the result list.")
print("s.split() does not change s.")
print(f"s: {s}")
print(f"s.split('a'):{s.split('a')}")
print(f"s.split('dog'):{s.split('dog')}")
print(f"s.split(maxsplit=-1):{s.split(maxsplit=-1)}")
print(f"s.split(maxsplit=1):{s.split(maxsplit=1)}")
print(f"s.split(maxsplit=2):{s.split(maxsplit=2)}")

print(f"'a man and a woman'.split(): {'a man and a woman'.split()}")
print(f"'a man and a woman'.split('a'): {'a man and a woman'.split('a')}")

s2 = "a 'long' and 'meaningful' journey."
print(f"s2: {s2}")
print(f"s2.split():{s2.split()}")
print("""
print(f"s2.split('\''):{s2.split('\'')}")
produce an error since SyntaxError: f-string expression part cannot include a backslash
""")
result = s2.split("'")
print(f"s2.split(\"'\"): {result}")

sep = "; "
print(f"sep: {sep}")
print(f"sep.join(['cat', 'dog', 'rabbit']): '{sep.join(['cat', 'dog', 'rabbit'])}'")
print(f"sep.join(['cat', 'dog']): '{sep.join(['cat', 'dog'])}'")
print(f"sep.join(['cat']): '{sep.join(['cat'])}'")
print(f"sep.join([]): '{sep.join([])}'")
print(f"','.join(['cat', 'dog', 'rabbit']): '{','.join(['cat', 'dog', 'rabbit'])}'")
print("""
print(f"','.join(['cat', ['dog', 'mouse'], 'rabbit']): '{','.join(['cat', ['dog', 'mouse'], 'rabbit'])}'")
    print(f"','.join(['cat', ['dog', 'mouse'], 'rabbit']): '{','.join(['cat', ['dog', 'mouse'], 'rabbit'])}'")
TypeError: sequence item 1: expected str instance, list found
""")
print("""
print(f"','.join([1,2,3]): '{','.join([1,2,3])}'")
    print(f"','.join([1,2,3]): '{','.join([1,2,3])}'")
TypeError: sequence item 0: expected str instance, int found
""")