Python Functions and String Manipulation

Greeting Function

• Function: hello_name(name) creates a personalized greeting.
• Example: hello_name('Bob') → returns 'Hello Bob!'
• The output format is always "Hello [name]!".

String Concatenation

• Function: make_abba(a, b) concatenates two strings in the "abba" format.
• Example: make_abba('Hi', 'Bye') → returns 'HiByeByeHi'.
• The result is structured as a + b + b + a.

HTML Tag Creation

• Function: make_tags(tag, word) generates an HTML string with specified tags.
• Example: make_tags('i', 'Yay') → results in 'Yay'.
• This function surrounds the word with the provided HTML tag.

String Insertion

• Function: make_out_word(out, word) inserts a word into the middle of a given "out" string of length 4.
• Example: make_out_word('[[]]', 'word') → returns '[[word]]'.
• The word is placed between the first two and last two characters of the "out" string.

Last Two Characters Repetition

• Function: extra_end(str) creates a string with three repetitions of the last two characters.
• Example: extra_end('Hello') → returns 'lo lolo'.
• This function only requires the input string to be at least 2 characters long.

First Two Characters Extraction

• Function: first_two(str) returns the first two characters of a string.
• Example: first_two('Hello') → results in 'He'.
• If the string length is less than 2, it returns the string itself.

Character Omission in Concatenation

• Function: non_start(a, b) concatenates two strings, omitting their first character.
• Example: non_start('Hello', 'There') → results in 'ellohere'.
• Both input strings must be at least length 1.

Left Rotation of Characters

• Function: left2(str) rotates the string left by two characters.
• Example: left2('Hello') → returns 'lloHe'.
• The function requires the input string to be at least 2 characters long.