how to decode UTF-8 in python 3

[snippsat]

To add a little info to @DeaD_EyE post.
One of the biggest changes in in Python 3 was Unicode.
In Python 3 are strings(Unicode) by default.
Bytes and strings(Unicode) are totally separated in Python 3(can not be mixed together).

>>> s = b'hello '
>>> w = 'world'
>>> s + w
Traceback (most recent call last):
  File "<string>", line 428, in runcode
  File "<interactive input>", line 1, in <module>
TypeError: can't concat str to bytes

# Decode from bytes to string
>>> s.decode() + w
'hello world'

>>> # The same as
>>> s.decode('utf-8') + w
'hello world

# For last example
>>> japanese = "桜の花びらたち"
>>> japanese
'桜の花びらたち'
>>> type(japanese)
<class 'str'>

Bring in stuff in from outside world then most have a encoding to be string(Unicode) in Python 3.
If not give encoding when take stuff in will be Bytes(b'something') or give error.
UTF-8 is always the first choice to try and ideally "always" use.
In and out example.

# Write to disk
japanese = "桜の花びらたち"
with open('jap.txt', 'w', encoding='utf-8') as f_out:
    f_out.write(japanese)
 
# Read from disk
with open('jap.txt', encoding='utf-8') as f:
    print(f.read())

Output:
桜の花びらたち