A Python string is a sequence of Unicode characters. Python treats strings as immutable sequences of Unicode code points. This is similar to how other languages handle strings, but Python's approach is more straightforward as it doesn't have a separate concept like 'runes' for individual characters.

```python
# coding: utf-8

import unicodedata

# 's' is a string assigned a literal value
# representing the word "hello" in the Thai language.
# Python string literals are Unicode by default.
s = "สวัสดี"

# This will produce the length of the string in characters.
print("Len:", len(s))

# Indexing into a string produces the Unicode character at
# each index. This loop generates the hex values of all
# the characters in 's'.
for i in range(len(s)):
    print(f"{ord(s[i]):x}", end=" ")
print()

# To count how many characters are in a string, we can
# simply use the len() function, as Python strings are
# already Unicode.
print("Character count:", len(s))

# A for loop handles strings by iterating over each character.
for idx, char in enumerate(s):
    print(f"{char!r} (U+{ord(char):04X}) starts at {idx}")

print("\nUsing unicodedata.iterparse")
# We can achieve a similar iteration by using the
# unicodedata.iterparse function for more detailed information.
for i, (char, name) in enumerate(unicodedata.iterparse(s)):
    print(f"{char!r} (U+{ord(char):04X}) starts at {i}")
    examine_char(char)

def examine_char(c):
    # We can compare a character value to a character literal directly.
    if c == 't':
        print("found tee")
    elif c == 'ส':
        print("found so sua")